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iwlwifi: refactor tx byte count table usage
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-calib.h"
54
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
65 */
66
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97
98
99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
100 {
101 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
102
103 if (hw_decrypt)
104 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
105 else
106 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
107
108 }
109
110 /**
111 * iwl4965_check_rxon_cmd - validate RXON structure is valid
112 *
113 * NOTE: This is really only useful during development and can eventually
114 * be #ifdef'd out once the driver is stable and folks aren't actively
115 * making changes
116 */
117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
118 {
119 int error = 0;
120 int counter = 1;
121
122 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
123 error |= le32_to_cpu(rxon->flags &
124 (RXON_FLG_TGJ_NARROW_BAND_MSK |
125 RXON_FLG_RADAR_DETECT_MSK));
126 if (error)
127 IWL_WARNING("check 24G fields %d | %d\n",
128 counter++, error);
129 } else {
130 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
131 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
132 if (error)
133 IWL_WARNING("check 52 fields %d | %d\n",
134 counter++, error);
135 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
136 if (error)
137 IWL_WARNING("check 52 CCK %d | %d\n",
138 counter++, error);
139 }
140 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
141 if (error)
142 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
143
144 /* make sure basic rates 6Mbps and 1Mbps are supported */
145 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
146 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
147 if (error)
148 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
149
150 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
151 if (error)
152 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
153
154 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
155 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
156 if (error)
157 IWL_WARNING("check CCK and short slot %d | %d\n",
158 counter++, error);
159
160 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
161 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
162 if (error)
163 IWL_WARNING("check CCK & auto detect %d | %d\n",
164 counter++, error);
165
166 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
167 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
168 if (error)
169 IWL_WARNING("check TGG and auto detect %d | %d\n",
170 counter++, error);
171
172 if (error)
173 IWL_WARNING("Tuning to channel %d\n",
174 le16_to_cpu(rxon->channel));
175
176 if (error) {
177 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
178 return -1;
179 }
180 return 0;
181 }
182
183 /**
184 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185 * @priv: staging_rxon is compared to active_rxon
186 *
187 * If the RXON structure is changing enough to require a new tune,
188 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190 */
191 static int iwl_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
211 return 1;
212
213 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
214 * be updated with the RXON_ASSOC command -- however only some
215 * flag transitions are allowed using RXON_ASSOC */
216
217 /* Check if we are not switching bands */
218 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
219 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
220 return 1;
221
222 /* Check if we are switching association toggle */
223 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
224 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
225 return 1;
226
227 return 0;
228 }
229
230 /**
231 * iwl4965_commit_rxon - commit staging_rxon to hardware
232 *
233 * The RXON command in staging_rxon is committed to the hardware and
234 * the active_rxon structure is updated with the new data. This
235 * function correctly transitions out of the RXON_ASSOC_MSK state if
236 * a HW tune is required based on the RXON structure changes.
237 */
238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
239 {
240 /* cast away the const for active_rxon in this function */
241 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
242 int ret;
243 bool new_assoc =
244 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
245
246 if (!iwl_is_alive(priv))
247 return -EBUSY;
248
249 /* always get timestamp with Rx frame */
250 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
251 /* allow CTS-to-self if possible. this is relevant only for
252 * 5000, but will not damage 4965 */
253 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
254
255 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
256 if (ret) {
257 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
258 return -EINVAL;
259 }
260
261 /* If we don't need to send a full RXON, we can use
262 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
263 * and other flags for the current radio configuration. */
264 if (!iwl_full_rxon_required(priv)) {
265 ret = iwl_send_rxon_assoc(priv);
266 if (ret) {
267 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
268 return ret;
269 }
270
271 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
272 return 0;
273 }
274
275 /* station table will be cleared */
276 priv->assoc_station_added = 0;
277
278 /* If we are currently associated and the new config requires
279 * an RXON_ASSOC and the new config wants the associated mask enabled,
280 * we must clear the associated from the active configuration
281 * before we apply the new config */
282 if (iwl_is_associated(priv) && new_assoc) {
283 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
284 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
285
286 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
287 sizeof(struct iwl_rxon_cmd),
288 &priv->active_rxon);
289
290 /* If the mask clearing failed then we set
291 * active_rxon back to what it was previously */
292 if (ret) {
293 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
294 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
295 return ret;
296 }
297 }
298
299 IWL_DEBUG_INFO("Sending RXON\n"
300 "* with%s RXON_FILTER_ASSOC_MSK\n"
301 "* channel = %d\n"
302 "* bssid = %pM\n",
303 (new_assoc ? "" : "out"),
304 le16_to_cpu(priv->staging_rxon.channel),
305 priv->staging_rxon.bssid_addr);
306
307 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
308
309 /* Apply the new configuration
310 * RXON unassoc clears the station table in uCode, send it before
311 * we add the bcast station. If assoc bit is set, we will send RXON
312 * after having added the bcast and bssid station.
313 */
314 if (!new_assoc) {
315 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
316 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
317 if (ret) {
318 IWL_ERROR("Error setting new RXON (%d)\n", ret);
319 return ret;
320 }
321 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
322 }
323
324 iwl_clear_stations_table(priv);
325
326 if (!priv->error_recovering)
327 priv->start_calib = 0;
328
329 /* Add the broadcast address so we can send broadcast frames */
330 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
331 IWL_INVALID_STATION) {
332 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
333 return -EIO;
334 }
335
336 /* If we have set the ASSOC_MSK and we are in BSS mode then
337 * add the IWL_AP_ID to the station rate table */
338 if (new_assoc) {
339 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
340 ret = iwl_rxon_add_station(priv,
341 priv->active_rxon.bssid_addr, 1);
342 if (ret == IWL_INVALID_STATION) {
343 IWL_ERROR("Error adding AP address for TX.\n");
344 return -EIO;
345 }
346 priv->assoc_station_added = 1;
347 if (priv->default_wep_key &&
348 iwl_send_static_wepkey_cmd(priv, 0))
349 IWL_ERROR("Could not send WEP static key.\n");
350 }
351
352 /* Apply the new configuration
353 * RXON assoc doesn't clear the station table in uCode,
354 */
355 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
356 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
357 if (ret) {
358 IWL_ERROR("Error setting new RXON (%d)\n", ret);
359 return ret;
360 }
361 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
362 }
363
364 iwl_init_sensitivity(priv);
365
366 /* If we issue a new RXON command which required a tune then we must
367 * send a new TXPOWER command or we won't be able to Tx any frames */
368 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
369 if (ret) {
370 IWL_ERROR("Error sending TX power (%d)\n", ret);
371 return ret;
372 }
373
374 return 0;
375 }
376
377 void iwl4965_update_chain_flags(struct iwl_priv *priv)
378 {
379
380 iwl_set_rxon_chain(priv);
381 iwl4965_commit_rxon(priv);
382 }
383
384 static int iwl4965_send_bt_config(struct iwl_priv *priv)
385 {
386 struct iwl4965_bt_cmd bt_cmd = {
387 .flags = 3,
388 .lead_time = 0xAA,
389 .max_kill = 1,
390 .kill_ack_mask = 0,
391 .kill_cts_mask = 0,
392 };
393
394 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
395 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
396 }
397
398 static void iwl_clear_free_frames(struct iwl_priv *priv)
399 {
400 struct list_head *element;
401
402 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
403 priv->frames_count);
404
405 while (!list_empty(&priv->free_frames)) {
406 element = priv->free_frames.next;
407 list_del(element);
408 kfree(list_entry(element, struct iwl_frame, list));
409 priv->frames_count--;
410 }
411
412 if (priv->frames_count) {
413 IWL_WARNING("%d frames still in use. Did we lose one?\n",
414 priv->frames_count);
415 priv->frames_count = 0;
416 }
417 }
418
419 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
420 {
421 struct iwl_frame *frame;
422 struct list_head *element;
423 if (list_empty(&priv->free_frames)) {
424 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
425 if (!frame) {
426 IWL_ERROR("Could not allocate frame!\n");
427 return NULL;
428 }
429
430 priv->frames_count++;
431 return frame;
432 }
433
434 element = priv->free_frames.next;
435 list_del(element);
436 return list_entry(element, struct iwl_frame, list);
437 }
438
439 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
440 {
441 memset(frame, 0, sizeof(*frame));
442 list_add(&frame->list, &priv->free_frames);
443 }
444
445 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
446 struct ieee80211_hdr *hdr,
447 const u8 *dest, int left)
448 {
449 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
450 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
451 (priv->iw_mode != NL80211_IFTYPE_AP)))
452 return 0;
453
454 if (priv->ibss_beacon->len > left)
455 return 0;
456
457 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
458
459 return priv->ibss_beacon->len;
460 }
461
462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
463 {
464 int i;
465 int rate_mask;
466
467 /* Set rate mask*/
468 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
469 rate_mask = priv->active_rate_basic & 0xF;
470 else
471 rate_mask = priv->active_rate_basic & 0xFF0;
472
473 /* Find lowest valid rate */
474 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
475 i = iwl_rates[i].next_ieee) {
476 if (rate_mask & (1 << i))
477 return iwl_rates[i].plcp;
478 }
479
480 /* No valid rate was found. Assign the lowest one */
481 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
482 return IWL_RATE_1M_PLCP;
483 else
484 return IWL_RATE_6M_PLCP;
485 }
486
487 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
488 struct iwl_frame *frame, u8 rate)
489 {
490 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
491 unsigned int frame_size;
492
493 tx_beacon_cmd = &frame->u.beacon;
494 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
495
496 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
497 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
498
499 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
500 iwl_bcast_addr,
501 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
502
503 BUG_ON(frame_size > MAX_MPDU_SIZE);
504 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
505
506 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
507 tx_beacon_cmd->tx.rate_n_flags =
508 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
509 else
510 tx_beacon_cmd->tx.rate_n_flags =
511 iwl_hw_set_rate_n_flags(rate, 0);
512
513 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
514 TX_CMD_FLG_TSF_MSK |
515 TX_CMD_FLG_STA_RATE_MSK;
516
517 return sizeof(*tx_beacon_cmd) + frame_size;
518 }
519 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
520 {
521 struct iwl_frame *frame;
522 unsigned int frame_size;
523 int rc;
524 u8 rate;
525
526 frame = iwl_get_free_frame(priv);
527
528 if (!frame) {
529 IWL_ERROR("Could not obtain free frame buffer for beacon "
530 "command.\n");
531 return -ENOMEM;
532 }
533
534 rate = iwl4965_rate_get_lowest_plcp(priv);
535
536 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
537
538 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
539 &frame->u.cmd[0]);
540
541 iwl_free_frame(priv, frame);
542
543 return rc;
544 }
545
546 /******************************************************************************
547 *
548 * Misc. internal state and helper functions
549 *
550 ******************************************************************************/
551
552 static void iwl4965_ht_conf(struct iwl_priv *priv,
553 struct ieee80211_bss_conf *bss_conf)
554 {
555 struct ieee80211_sta_ht_cap *ht_conf;
556 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
557 struct ieee80211_sta *sta;
558
559 IWL_DEBUG_MAC80211("enter: \n");
560
561 if (!iwl_conf->is_ht)
562 return;
563
564
565 /*
566 * It is totally wrong to base global information on something
567 * that is valid only when associated, alas, this driver works
568 * that way and I don't know how to fix it.
569 */
570
571 rcu_read_lock();
572 sta = ieee80211_find_sta(priv->hw, priv->bssid);
573 if (!sta) {
574 rcu_read_unlock();
575 return;
576 }
577 ht_conf = &sta->ht_cap;
578
579 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
580 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
581 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
582 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
583
584 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
585 iwl_conf->max_amsdu_size =
586 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
587
588 iwl_conf->supported_chan_width =
589 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
590
591 iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
592 /* If no above or below channel supplied disable FAT channel */
593 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
594 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
595 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
596 iwl_conf->supported_chan_width = 0;
597 }
598
599 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
600
601 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
602
603 iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
604 iwl_conf->ht_protection =
605 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
606 iwl_conf->non_GF_STA_present =
607 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
608
609 rcu_read_unlock();
610
611 IWL_DEBUG_MAC80211("leave\n");
612 }
613
614 /*
615 * QoS support
616 */
617 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
618 {
619 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
620 return;
621
622 if (!priv->qos_data.qos_enable)
623 return;
624
625 priv->qos_data.def_qos_parm.qos_flags = 0;
626
627 if (priv->qos_data.qos_cap.q_AP.queue_request &&
628 !priv->qos_data.qos_cap.q_AP.txop_request)
629 priv->qos_data.def_qos_parm.qos_flags |=
630 QOS_PARAM_FLG_TXOP_TYPE_MSK;
631 if (priv->qos_data.qos_active)
632 priv->qos_data.def_qos_parm.qos_flags |=
633 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
634
635 if (priv->current_ht_config.is_ht)
636 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
637
638 if (force || iwl_is_associated(priv)) {
639 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
640 priv->qos_data.qos_active,
641 priv->qos_data.def_qos_parm.qos_flags);
642
643 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
644 sizeof(struct iwl_qosparam_cmd),
645 &priv->qos_data.def_qos_parm, NULL);
646 }
647 }
648
649 #define MAX_UCODE_BEACON_INTERVAL 4096
650
651 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
652 {
653 u16 new_val = 0;
654 u16 beacon_factor = 0;
655
656 beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
657 / MAX_UCODE_BEACON_INTERVAL;
658 new_val = beacon_val / beacon_factor;
659
660 return new_val;
661 }
662
663 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
664 {
665 u64 tsf;
666 s32 interval_tm, rem;
667 unsigned long flags;
668 struct ieee80211_conf *conf = NULL;
669 u16 beacon_int = 0;
670
671 conf = ieee80211_get_hw_conf(priv->hw);
672
673 spin_lock_irqsave(&priv->lock, flags);
674 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
675 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
676
677 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
678 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
679 priv->rxon_timing.atim_window = 0;
680 } else {
681 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
682
683 /* TODO: we need to get atim_window from upper stack
684 * for now we set to 0 */
685 priv->rxon_timing.atim_window = 0;
686 }
687
688 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
689
690 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
691 interval_tm = beacon_int * 1024;
692 rem = do_div(tsf, interval_tm);
693 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
694
695 spin_unlock_irqrestore(&priv->lock, flags);
696 IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
697 le16_to_cpu(priv->rxon_timing.beacon_interval),
698 le32_to_cpu(priv->rxon_timing.beacon_init_val),
699 le16_to_cpu(priv->rxon_timing.atim_window));
700 }
701
702 static void iwl_set_flags_for_band(struct iwl_priv *priv,
703 enum ieee80211_band band)
704 {
705 if (band == IEEE80211_BAND_5GHZ) {
706 priv->staging_rxon.flags &=
707 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
708 | RXON_FLG_CCK_MSK);
709 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
710 } else {
711 /* Copied from iwl4965_post_associate() */
712 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
713 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
714 else
715 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
716
717 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
718 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
719
720 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
721 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
722 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
723 }
724 }
725
726 /*
727 * initialize rxon structure with default values from eeprom
728 */
729 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
730 {
731 const struct iwl_channel_info *ch_info;
732
733 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
734
735 switch (priv->iw_mode) {
736 case NL80211_IFTYPE_AP:
737 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
738 break;
739
740 case NL80211_IFTYPE_STATION:
741 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
742 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
743 break;
744
745 case NL80211_IFTYPE_ADHOC:
746 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
747 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
748 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
749 RXON_FILTER_ACCEPT_GRP_MSK;
750 break;
751
752 case NL80211_IFTYPE_MONITOR:
753 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
754 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
755 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
756 break;
757 default:
758 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
759 break;
760 }
761
762 #if 0
763 /* TODO: Figure out when short_preamble would be set and cache from
764 * that */
765 if (!hw_to_local(priv->hw)->short_preamble)
766 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
767 else
768 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
769 #endif
770
771 ch_info = iwl_get_channel_info(priv, priv->band,
772 le16_to_cpu(priv->active_rxon.channel));
773
774 if (!ch_info)
775 ch_info = &priv->channel_info[0];
776
777 /*
778 * in some case A channels are all non IBSS
779 * in this case force B/G channel
780 */
781 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
782 !(is_channel_ibss(ch_info)))
783 ch_info = &priv->channel_info[0];
784
785 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
786 priv->band = ch_info->band;
787
788 iwl_set_flags_for_band(priv, priv->band);
789
790 priv->staging_rxon.ofdm_basic_rates =
791 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
792 priv->staging_rxon.cck_basic_rates =
793 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
794
795 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
796 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
797 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
798 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
799 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
800 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
801 iwl_set_rxon_chain(priv);
802 }
803
804 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
805 {
806 priv->iw_mode = mode;
807
808 iwl4965_connection_init_rx_config(priv);
809 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
810
811 iwl_clear_stations_table(priv);
812
813 /* dont commit rxon if rf-kill is on*/
814 if (!iwl_is_ready_rf(priv))
815 return -EAGAIN;
816
817 cancel_delayed_work(&priv->scan_check);
818 if (iwl_scan_cancel_timeout(priv, 100)) {
819 IWL_WARNING("Aborted scan still in progress after 100ms\n");
820 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
821 return -EAGAIN;
822 }
823
824 iwl4965_commit_rxon(priv);
825
826 return 0;
827 }
828
829 static void iwl4965_set_rate(struct iwl_priv *priv)
830 {
831 const struct ieee80211_supported_band *hw = NULL;
832 struct ieee80211_rate *rate;
833 int i;
834
835 hw = iwl_get_hw_mode(priv, priv->band);
836 if (!hw) {
837 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
838 return;
839 }
840
841 priv->active_rate = 0;
842 priv->active_rate_basic = 0;
843
844 for (i = 0; i < hw->n_bitrates; i++) {
845 rate = &(hw->bitrates[i]);
846 if (rate->hw_value < IWL_RATE_COUNT)
847 priv->active_rate |= (1 << rate->hw_value);
848 }
849
850 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
851 priv->active_rate, priv->active_rate_basic);
852
853 /*
854 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
855 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
856 * OFDM
857 */
858 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
859 priv->staging_rxon.cck_basic_rates =
860 ((priv->active_rate_basic &
861 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
862 else
863 priv->staging_rxon.cck_basic_rates =
864 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
865
866 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
867 priv->staging_rxon.ofdm_basic_rates =
868 ((priv->active_rate_basic &
869 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
870 IWL_FIRST_OFDM_RATE) & 0xFF;
871 else
872 priv->staging_rxon.ofdm_basic_rates =
873 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
874 }
875
876 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
877
878 #include "iwl-spectrum.h"
879
880 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
881 #define BEACON_TIME_MASK_HIGH 0xFF000000
882 #define TIME_UNIT 1024
883
884 /*
885 * extended beacon time format
886 * time in usec will be changed into a 32-bit value in 8:24 format
887 * the high 1 byte is the beacon counts
888 * the lower 3 bytes is the time in usec within one beacon interval
889 */
890
891 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
892 {
893 u32 quot;
894 u32 rem;
895 u32 interval = beacon_interval * 1024;
896
897 if (!interval || !usec)
898 return 0;
899
900 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
901 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
902
903 return (quot << 24) + rem;
904 }
905
906 /* base is usually what we get from ucode with each received frame,
907 * the same as HW timer counter counting down
908 */
909
910 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
911 {
912 u32 base_low = base & BEACON_TIME_MASK_LOW;
913 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
914 u32 interval = beacon_interval * TIME_UNIT;
915 u32 res = (base & BEACON_TIME_MASK_HIGH) +
916 (addon & BEACON_TIME_MASK_HIGH);
917
918 if (base_low > addon_low)
919 res += base_low - addon_low;
920 else if (base_low < addon_low) {
921 res += interval + base_low - addon_low;
922 res += (1 << 24);
923 } else
924 res += (1 << 24);
925
926 return cpu_to_le32(res);
927 }
928
929 static int iwl4965_get_measurement(struct iwl_priv *priv,
930 struct ieee80211_measurement_params *params,
931 u8 type)
932 {
933 struct iwl4965_spectrum_cmd spectrum;
934 struct iwl_rx_packet *res;
935 struct iwl_host_cmd cmd = {
936 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
937 .data = (void *)&spectrum,
938 .meta.flags = CMD_WANT_SKB,
939 };
940 u32 add_time = le64_to_cpu(params->start_time);
941 int rc;
942 int spectrum_resp_status;
943 int duration = le16_to_cpu(params->duration);
944
945 if (iwl_is_associated(priv))
946 add_time =
947 iwl4965_usecs_to_beacons(
948 le64_to_cpu(params->start_time) - priv->last_tsf,
949 le16_to_cpu(priv->rxon_timing.beacon_interval));
950
951 memset(&spectrum, 0, sizeof(spectrum));
952
953 spectrum.channel_count = cpu_to_le16(1);
954 spectrum.flags =
955 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
956 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
957 cmd.len = sizeof(spectrum);
958 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
959
960 if (iwl_is_associated(priv))
961 spectrum.start_time =
962 iwl4965_add_beacon_time(priv->last_beacon_time,
963 add_time,
964 le16_to_cpu(priv->rxon_timing.beacon_interval));
965 else
966 spectrum.start_time = 0;
967
968 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
969 spectrum.channels[0].channel = params->channel;
970 spectrum.channels[0].type = type;
971 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
972 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
973 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
974
975 rc = iwl_send_cmd_sync(priv, &cmd);
976 if (rc)
977 return rc;
978
979 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
980 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
981 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
982 rc = -EIO;
983 }
984
985 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
986 switch (spectrum_resp_status) {
987 case 0: /* Command will be handled */
988 if (res->u.spectrum.id != 0xff) {
989 IWL_DEBUG_INFO
990 ("Replaced existing measurement: %d\n",
991 res->u.spectrum.id);
992 priv->measurement_status &= ~MEASUREMENT_READY;
993 }
994 priv->measurement_status |= MEASUREMENT_ACTIVE;
995 rc = 0;
996 break;
997
998 case 1: /* Command will not be handled */
999 rc = -EAGAIN;
1000 break;
1001 }
1002
1003 dev_kfree_skb_any(cmd.meta.u.skb);
1004
1005 return rc;
1006 }
1007 #endif
1008
1009 /******************************************************************************
1010 *
1011 * Generic RX handler implementations
1012 *
1013 ******************************************************************************/
1014 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1015 struct iwl_rx_mem_buffer *rxb)
1016 {
1017 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1018 struct iwl_alive_resp *palive;
1019 struct delayed_work *pwork;
1020
1021 palive = &pkt->u.alive_frame;
1022
1023 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1024 "0x%01X 0x%01X\n",
1025 palive->is_valid, palive->ver_type,
1026 palive->ver_subtype);
1027
1028 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1029 IWL_DEBUG_INFO("Initialization Alive received.\n");
1030 memcpy(&priv->card_alive_init,
1031 &pkt->u.alive_frame,
1032 sizeof(struct iwl_init_alive_resp));
1033 pwork = &priv->init_alive_start;
1034 } else {
1035 IWL_DEBUG_INFO("Runtime Alive received.\n");
1036 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1037 sizeof(struct iwl_alive_resp));
1038 pwork = &priv->alive_start;
1039 }
1040
1041 /* We delay the ALIVE response by 5ms to
1042 * give the HW RF Kill time to activate... */
1043 if (palive->is_valid == UCODE_VALID_OK)
1044 queue_delayed_work(priv->workqueue, pwork,
1045 msecs_to_jiffies(5));
1046 else
1047 IWL_WARNING("uCode did not respond OK.\n");
1048 }
1049
1050 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1051 struct iwl_rx_mem_buffer *rxb)
1052 {
1053 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1054
1055 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1056 "seq 0x%04X ser 0x%08X\n",
1057 le32_to_cpu(pkt->u.err_resp.error_type),
1058 get_cmd_string(pkt->u.err_resp.cmd_id),
1059 pkt->u.err_resp.cmd_id,
1060 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1061 le32_to_cpu(pkt->u.err_resp.error_info));
1062 }
1063
1064 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1065
1066 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1067 {
1068 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1069 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1070 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1071 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1072 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1073 rxon->channel = csa->channel;
1074 priv->staging_rxon.channel = csa->channel;
1075 }
1076
1077 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1078 struct iwl_rx_mem_buffer *rxb)
1079 {
1080 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1081 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1082 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1083
1084 if (!report->state) {
1085 IWL_DEBUG(IWL_DL_11H,
1086 "Spectrum Measure Notification: Start\n");
1087 return;
1088 }
1089
1090 memcpy(&priv->measure_report, report, sizeof(*report));
1091 priv->measurement_status |= MEASUREMENT_READY;
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1096 struct iwl_rx_mem_buffer *rxb)
1097 {
1098 #ifdef CONFIG_IWLWIFI_DEBUG
1099 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1100 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1101 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1102 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1103 #endif
1104 }
1105
1106 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1107 struct iwl_rx_mem_buffer *rxb)
1108 {
1109 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1110 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1111 "notification for %s:\n",
1112 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1113 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1114 }
1115
1116 static void iwl4965_bg_beacon_update(struct work_struct *work)
1117 {
1118 struct iwl_priv *priv =
1119 container_of(work, struct iwl_priv, beacon_update);
1120 struct sk_buff *beacon;
1121
1122 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1123 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1124
1125 if (!beacon) {
1126 IWL_ERROR("update beacon failed\n");
1127 return;
1128 }
1129
1130 mutex_lock(&priv->mutex);
1131 /* new beacon skb is allocated every time; dispose previous.*/
1132 if (priv->ibss_beacon)
1133 dev_kfree_skb(priv->ibss_beacon);
1134
1135 priv->ibss_beacon = beacon;
1136 mutex_unlock(&priv->mutex);
1137
1138 iwl4965_send_beacon_cmd(priv);
1139 }
1140
1141 /**
1142 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1143 *
1144 * This callback is provided in order to send a statistics request.
1145 *
1146 * This timer function is continually reset to execute within
1147 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1148 * was received. We need to ensure we receive the statistics in order
1149 * to update the temperature used for calibrating the TXPOWER.
1150 */
1151 static void iwl4965_bg_statistics_periodic(unsigned long data)
1152 {
1153 struct iwl_priv *priv = (struct iwl_priv *)data;
1154
1155 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1156 return;
1157
1158 iwl_send_statistics_request(priv, CMD_ASYNC);
1159 }
1160
1161 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1162 struct iwl_rx_mem_buffer *rxb)
1163 {
1164 #ifdef CONFIG_IWLWIFI_DEBUG
1165 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1166 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1167 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1168
1169 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1170 "tsf %d %d rate %d\n",
1171 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1172 beacon->beacon_notify_hdr.failure_frame,
1173 le32_to_cpu(beacon->ibss_mgr_status),
1174 le32_to_cpu(beacon->high_tsf),
1175 le32_to_cpu(beacon->low_tsf), rate);
1176 #endif
1177
1178 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1179 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1180 queue_work(priv->workqueue, &priv->beacon_update);
1181 }
1182
1183 /* Handle notification from uCode that card's power state is changing
1184 * due to software, hardware, or critical temperature RFKILL */
1185 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1186 struct iwl_rx_mem_buffer *rxb)
1187 {
1188 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1189 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1190 unsigned long status = priv->status;
1191
1192 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1193 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1194 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1195
1196 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1197 RF_CARD_DISABLED)) {
1198
1199 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1200 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1201
1202 if (!iwl_grab_nic_access(priv)) {
1203 iwl_write_direct32(
1204 priv, HBUS_TARG_MBX_C,
1205 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207 iwl_release_nic_access(priv);
1208 }
1209
1210 if (!(flags & RXON_CARD_DISABLED)) {
1211 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1212 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1213 if (!iwl_grab_nic_access(priv)) {
1214 iwl_write_direct32(
1215 priv, HBUS_TARG_MBX_C,
1216 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1217
1218 iwl_release_nic_access(priv);
1219 }
1220 }
1221
1222 if (flags & RF_CARD_DISABLED) {
1223 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1224 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1225 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1226 if (!iwl_grab_nic_access(priv))
1227 iwl_release_nic_access(priv);
1228 }
1229 }
1230
1231 if (flags & HW_CARD_DISABLED)
1232 set_bit(STATUS_RF_KILL_HW, &priv->status);
1233 else
1234 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1235
1236
1237 if (flags & SW_CARD_DISABLED)
1238 set_bit(STATUS_RF_KILL_SW, &priv->status);
1239 else
1240 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1241
1242 if (!(flags & RXON_CARD_DISABLED))
1243 iwl_scan_cancel(priv);
1244
1245 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1246 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1247 (test_bit(STATUS_RF_KILL_SW, &status) !=
1248 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1249 queue_work(priv->workqueue, &priv->rf_kill);
1250 else
1251 wake_up_interruptible(&priv->wait_command_queue);
1252 }
1253
1254 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1255 {
1256 int ret;
1257 unsigned long flags;
1258
1259 spin_lock_irqsave(&priv->lock, flags);
1260 ret = iwl_grab_nic_access(priv);
1261 if (ret)
1262 goto err;
1263
1264 if (src == IWL_PWR_SRC_VAUX) {
1265 u32 val;
1266 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1267 &val);
1268
1269 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1270 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1271 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1272 ~APMG_PS_CTRL_MSK_PWR_SRC);
1273 } else {
1274 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1275 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1276 ~APMG_PS_CTRL_MSK_PWR_SRC);
1277 }
1278
1279 iwl_release_nic_access(priv);
1280 err:
1281 spin_unlock_irqrestore(&priv->lock, flags);
1282 return ret;
1283 }
1284
1285 /**
1286 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1287 *
1288 * Setup the RX handlers for each of the reply types sent from the uCode
1289 * to the host.
1290 *
1291 * This function chains into the hardware specific files for them to setup
1292 * any hardware specific handlers as well.
1293 */
1294 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1295 {
1296 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1297 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1298 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1299 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1300 iwl4965_rx_spectrum_measure_notif;
1301 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1302 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1303 iwl4965_rx_pm_debug_statistics_notif;
1304 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1305
1306 /*
1307 * The same handler is used for both the REPLY to a discrete
1308 * statistics request from the host as well as for the periodic
1309 * statistics notifications (after received beacons) from the uCode.
1310 */
1311 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1312 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1313
1314 iwl_setup_rx_scan_handlers(priv);
1315
1316 /* status change handler */
1317 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1318
1319 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1320 iwl_rx_missed_beacon_notif;
1321 /* Rx handlers */
1322 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1323 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1324 /* block ack */
1325 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1326 /* Set up hardware specific Rx handlers */
1327 priv->cfg->ops->lib->rx_handler_setup(priv);
1328 }
1329
1330 /*
1331 * this should be called while priv->lock is locked
1332 */
1333 static void __iwl_rx_replenish(struct iwl_priv *priv)
1334 {
1335 iwl_rx_allocate(priv);
1336 iwl_rx_queue_restock(priv);
1337 }
1338
1339
1340 /**
1341 * iwl_rx_handle - Main entry function for receiving responses from uCode
1342 *
1343 * Uses the priv->rx_handlers callback function array to invoke
1344 * the appropriate handlers, including command responses,
1345 * frame-received notifications, and other notifications.
1346 */
1347 void iwl_rx_handle(struct iwl_priv *priv)
1348 {
1349 struct iwl_rx_mem_buffer *rxb;
1350 struct iwl_rx_packet *pkt;
1351 struct iwl_rx_queue *rxq = &priv->rxq;
1352 u32 r, i;
1353 int reclaim;
1354 unsigned long flags;
1355 u8 fill_rx = 0;
1356 u32 count = 8;
1357
1358 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1359 * buffer that the driver may process (last buffer filled by ucode). */
1360 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1361 i = rxq->read;
1362
1363 /* Rx interrupt, but nothing sent from uCode */
1364 if (i == r)
1365 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1366
1367 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1368 fill_rx = 1;
1369
1370 while (i != r) {
1371 rxb = rxq->queue[i];
1372
1373 /* If an RXB doesn't have a Rx queue slot associated with it,
1374 * then a bug has been introduced in the queue refilling
1375 * routines -- catch it here */
1376 BUG_ON(rxb == NULL);
1377
1378 rxq->queue[i] = NULL;
1379
1380 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1381 priv->hw_params.rx_buf_size,
1382 PCI_DMA_FROMDEVICE);
1383 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1384
1385 /* Reclaim a command buffer only if this packet is a response
1386 * to a (driver-originated) command.
1387 * If the packet (e.g. Rx frame) originated from uCode,
1388 * there is no command buffer to reclaim.
1389 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1390 * but apparently a few don't get set; catch them here. */
1391 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1392 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1393 (pkt->hdr.cmd != REPLY_RX) &&
1394 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1395 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1396 (pkt->hdr.cmd != REPLY_TX);
1397
1398 /* Based on type of command response or notification,
1399 * handle those that need handling via function in
1400 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1401 if (priv->rx_handlers[pkt->hdr.cmd]) {
1402 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1403 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1404 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1405 } else {
1406 /* No handling needed */
1407 IWL_DEBUG(IWL_DL_RX,
1408 "r %d i %d No handler needed for %s, 0x%02x\n",
1409 r, i, get_cmd_string(pkt->hdr.cmd),
1410 pkt->hdr.cmd);
1411 }
1412
1413 if (reclaim) {
1414 /* Invoke any callbacks, transfer the skb to caller, and
1415 * fire off the (possibly) blocking iwl_send_cmd()
1416 * as we reclaim the driver command queue */
1417 if (rxb && rxb->skb)
1418 iwl_tx_cmd_complete(priv, rxb);
1419 else
1420 IWL_WARNING("Claim null rxb?\n");
1421 }
1422
1423 /* For now we just don't re-use anything. We can tweak this
1424 * later to try and re-use notification packets and SKBs that
1425 * fail to Rx correctly */
1426 if (rxb->skb != NULL) {
1427 priv->alloc_rxb_skb--;
1428 dev_kfree_skb_any(rxb->skb);
1429 rxb->skb = NULL;
1430 }
1431
1432 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1433 priv->hw_params.rx_buf_size,
1434 PCI_DMA_FROMDEVICE);
1435 spin_lock_irqsave(&rxq->lock, flags);
1436 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1437 spin_unlock_irqrestore(&rxq->lock, flags);
1438 i = (i + 1) & RX_QUEUE_MASK;
1439 /* If there are a lot of unused frames,
1440 * restock the Rx queue so ucode wont assert. */
1441 if (fill_rx) {
1442 count++;
1443 if (count >= 8) {
1444 priv->rxq.read = i;
1445 __iwl_rx_replenish(priv);
1446 count = 0;
1447 }
1448 }
1449 }
1450
1451 /* Backtrack one entry */
1452 priv->rxq.read = i;
1453 iwl_rx_queue_restock(priv);
1454 }
1455
1456 #ifdef CONFIG_IWLWIFI_DEBUG
1457 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1458 {
1459 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1460
1461 IWL_DEBUG_RADIO("RX CONFIG:\n");
1462 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1463 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1464 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1465 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1466 le32_to_cpu(rxon->filter_flags));
1467 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1468 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1469 rxon->ofdm_basic_rates);
1470 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1471 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1472 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1473 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1474 }
1475 #endif
1476
1477 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1478 {
1479 IWL_DEBUG_ISR("Enabling interrupts\n");
1480 set_bit(STATUS_INT_ENABLED, &priv->status);
1481 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1482 }
1483
1484 /* call this function to flush any scheduled tasklet */
1485 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1486 {
1487 /* wait to make sure we flush pedding tasklet*/
1488 synchronize_irq(priv->pci_dev->irq);
1489 tasklet_kill(&priv->irq_tasklet);
1490 }
1491
1492 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1493 {
1494 clear_bit(STATUS_INT_ENABLED, &priv->status);
1495
1496 /* disable interrupts from uCode/NIC to host */
1497 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1498
1499 /* acknowledge/clear/reset any interrupts still pending
1500 * from uCode or flow handler (Rx/Tx DMA) */
1501 iwl_write32(priv, CSR_INT, 0xffffffff);
1502 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1503 IWL_DEBUG_ISR("Disabled interrupts\n");
1504 }
1505
1506
1507 /**
1508 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1509 */
1510 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1511 {
1512 /* Set the FW error flag -- cleared on iwl4965_down */
1513 set_bit(STATUS_FW_ERROR, &priv->status);
1514
1515 /* Cancel currently queued command. */
1516 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1517
1518 #ifdef CONFIG_IWLWIFI_DEBUG
1519 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1520 iwl_dump_nic_error_log(priv);
1521 iwl_dump_nic_event_log(priv);
1522 iwl4965_print_rx_config_cmd(priv);
1523 }
1524 #endif
1525
1526 wake_up_interruptible(&priv->wait_command_queue);
1527
1528 /* Keep the restart process from trying to send host
1529 * commands by clearing the INIT status bit */
1530 clear_bit(STATUS_READY, &priv->status);
1531
1532 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1533 IWL_DEBUG(IWL_DL_FW_ERRORS,
1534 "Restarting adapter due to uCode error.\n");
1535
1536 if (iwl_is_associated(priv)) {
1537 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1538 sizeof(priv->recovery_rxon));
1539 priv->error_recovering = 1;
1540 }
1541 if (priv->cfg->mod_params->restart_fw)
1542 queue_work(priv->workqueue, &priv->restart);
1543 }
1544 }
1545
1546 static void iwl4965_error_recovery(struct iwl_priv *priv)
1547 {
1548 unsigned long flags;
1549
1550 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1551 sizeof(priv->staging_rxon));
1552 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1553 iwl4965_commit_rxon(priv);
1554
1555 iwl_rxon_add_station(priv, priv->bssid, 1);
1556
1557 spin_lock_irqsave(&priv->lock, flags);
1558 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1559 priv->error_recovering = 0;
1560 spin_unlock_irqrestore(&priv->lock, flags);
1561 }
1562
1563 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1564 {
1565 u32 inta, handled = 0;
1566 u32 inta_fh;
1567 unsigned long flags;
1568 #ifdef CONFIG_IWLWIFI_DEBUG
1569 u32 inta_mask;
1570 #endif
1571
1572 spin_lock_irqsave(&priv->lock, flags);
1573
1574 /* Ack/clear/reset pending uCode interrupts.
1575 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1576 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1577 inta = iwl_read32(priv, CSR_INT);
1578 iwl_write32(priv, CSR_INT, inta);
1579
1580 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1581 * Any new interrupts that happen after this, either while we're
1582 * in this tasklet, or later, will show up in next ISR/tasklet. */
1583 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1584 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1585
1586 #ifdef CONFIG_IWLWIFI_DEBUG
1587 if (priv->debug_level & IWL_DL_ISR) {
1588 /* just for debug */
1589 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1590 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1591 inta, inta_mask, inta_fh);
1592 }
1593 #endif
1594
1595 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1596 * atomic, make sure that inta covers all the interrupts that
1597 * we've discovered, even if FH interrupt came in just after
1598 * reading CSR_INT. */
1599 if (inta_fh & CSR49_FH_INT_RX_MASK)
1600 inta |= CSR_INT_BIT_FH_RX;
1601 if (inta_fh & CSR49_FH_INT_TX_MASK)
1602 inta |= CSR_INT_BIT_FH_TX;
1603
1604 /* Now service all interrupt bits discovered above. */
1605 if (inta & CSR_INT_BIT_HW_ERR) {
1606 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1607
1608 /* Tell the device to stop sending interrupts */
1609 iwl4965_disable_interrupts(priv);
1610
1611 iwl4965_irq_handle_error(priv);
1612
1613 handled |= CSR_INT_BIT_HW_ERR;
1614
1615 spin_unlock_irqrestore(&priv->lock, flags);
1616
1617 return;
1618 }
1619
1620 #ifdef CONFIG_IWLWIFI_DEBUG
1621 if (priv->debug_level & (IWL_DL_ISR)) {
1622 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1623 if (inta & CSR_INT_BIT_SCD)
1624 IWL_DEBUG_ISR("Scheduler finished to transmit "
1625 "the frame/frames.\n");
1626
1627 /* Alive notification via Rx interrupt will do the real work */
1628 if (inta & CSR_INT_BIT_ALIVE)
1629 IWL_DEBUG_ISR("Alive interrupt\n");
1630 }
1631 #endif
1632 /* Safely ignore these bits for debug checks below */
1633 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1634
1635 /* HW RF KILL switch toggled */
1636 if (inta & CSR_INT_BIT_RF_KILL) {
1637 int hw_rf_kill = 0;
1638 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1639 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1640 hw_rf_kill = 1;
1641
1642 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1643 hw_rf_kill ? "disable radio":"enable radio");
1644
1645 /* driver only loads ucode once setting the interface up.
1646 * the driver as well won't allow loading if RFKILL is set
1647 * therefore no need to restart the driver from this handler
1648 */
1649 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1650 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1651
1652 handled |= CSR_INT_BIT_RF_KILL;
1653 }
1654
1655 /* Chip got too hot and stopped itself */
1656 if (inta & CSR_INT_BIT_CT_KILL) {
1657 IWL_ERROR("Microcode CT kill error detected.\n");
1658 handled |= CSR_INT_BIT_CT_KILL;
1659 }
1660
1661 /* Error detected by uCode */
1662 if (inta & CSR_INT_BIT_SW_ERR) {
1663 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1664 inta);
1665 iwl4965_irq_handle_error(priv);
1666 handled |= CSR_INT_BIT_SW_ERR;
1667 }
1668
1669 /* uCode wakes up after power-down sleep */
1670 if (inta & CSR_INT_BIT_WAKEUP) {
1671 IWL_DEBUG_ISR("Wakeup interrupt\n");
1672 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1673 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1674 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1675 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1676 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1677 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1678 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1679
1680 handled |= CSR_INT_BIT_WAKEUP;
1681 }
1682
1683 /* All uCode command responses, including Tx command responses,
1684 * Rx "responses" (frame-received notification), and other
1685 * notifications from uCode come through here*/
1686 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1687 iwl_rx_handle(priv);
1688 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1689 }
1690
1691 if (inta & CSR_INT_BIT_FH_TX) {
1692 IWL_DEBUG_ISR("Tx interrupt\n");
1693 handled |= CSR_INT_BIT_FH_TX;
1694 /* FH finished to write, send event */
1695 priv->ucode_write_complete = 1;
1696 wake_up_interruptible(&priv->wait_command_queue);
1697 }
1698
1699 if (inta & ~handled)
1700 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1701
1702 if (inta & ~CSR_INI_SET_MASK) {
1703 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1704 inta & ~CSR_INI_SET_MASK);
1705 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1706 }
1707
1708 /* Re-enable all interrupts */
1709 /* only Re-enable if diabled by irq */
1710 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1711 iwl4965_enable_interrupts(priv);
1712
1713 #ifdef CONFIG_IWLWIFI_DEBUG
1714 if (priv->debug_level & (IWL_DL_ISR)) {
1715 inta = iwl_read32(priv, CSR_INT);
1716 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1717 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1718 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1719 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1720 }
1721 #endif
1722 spin_unlock_irqrestore(&priv->lock, flags);
1723 }
1724
1725 static irqreturn_t iwl4965_isr(int irq, void *data)
1726 {
1727 struct iwl_priv *priv = data;
1728 u32 inta, inta_mask;
1729 u32 inta_fh;
1730 if (!priv)
1731 return IRQ_NONE;
1732
1733 spin_lock(&priv->lock);
1734
1735 /* Disable (but don't clear!) interrupts here to avoid
1736 * back-to-back ISRs and sporadic interrupts from our NIC.
1737 * If we have something to service, the tasklet will re-enable ints.
1738 * If we *don't* have something, we'll re-enable before leaving here. */
1739 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1740 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1741
1742 /* Discover which interrupts are active/pending */
1743 inta = iwl_read32(priv, CSR_INT);
1744 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1745
1746 /* Ignore interrupt if there's nothing in NIC to service.
1747 * This may be due to IRQ shared with another device,
1748 * or due to sporadic interrupts thrown from our NIC. */
1749 if (!inta && !inta_fh) {
1750 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1751 goto none;
1752 }
1753
1754 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1755 /* Hardware disappeared. It might have already raised
1756 * an interrupt */
1757 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1758 goto unplugged;
1759 }
1760
1761 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1762 inta, inta_mask, inta_fh);
1763
1764 inta &= ~CSR_INT_BIT_SCD;
1765
1766 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1767 if (likely(inta || inta_fh))
1768 tasklet_schedule(&priv->irq_tasklet);
1769
1770 unplugged:
1771 spin_unlock(&priv->lock);
1772 return IRQ_HANDLED;
1773
1774 none:
1775 /* re-enable interrupts here since we don't have anything to service. */
1776 /* only Re-enable if diabled by irq */
1777 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1778 iwl4965_enable_interrupts(priv);
1779 spin_unlock(&priv->lock);
1780 return IRQ_NONE;
1781 }
1782
1783 /******************************************************************************
1784 *
1785 * uCode download functions
1786 *
1787 ******************************************************************************/
1788
1789 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1790 {
1791 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1792 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1793 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1794 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1795 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1796 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1797 }
1798
1799 static void iwl4965_nic_start(struct iwl_priv *priv)
1800 {
1801 /* Remove all resets to allow NIC to operate */
1802 iwl_write32(priv, CSR_RESET, 0);
1803 }
1804
1805
1806 /**
1807 * iwl4965_read_ucode - Read uCode images from disk file.
1808 *
1809 * Copy into buffers for card to fetch via bus-mastering
1810 */
1811 static int iwl4965_read_ucode(struct iwl_priv *priv)
1812 {
1813 struct iwl_ucode *ucode;
1814 int ret;
1815 const struct firmware *ucode_raw;
1816 const char *name = priv->cfg->fw_name;
1817 u8 *src;
1818 size_t len;
1819 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1820
1821 /* Ask kernel firmware_class module to get the boot firmware off disk.
1822 * request_firmware() is synchronous, file is in memory on return. */
1823 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1824 if (ret < 0) {
1825 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1826 name, ret);
1827 goto error;
1828 }
1829
1830 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1831 name, ucode_raw->size);
1832
1833 /* Make sure that we got at least our header! */
1834 if (ucode_raw->size < sizeof(*ucode)) {
1835 IWL_ERROR("File size way too small!\n");
1836 ret = -EINVAL;
1837 goto err_release;
1838 }
1839
1840 /* Data from ucode file: header followed by uCode images */
1841 ucode = (void *)ucode_raw->data;
1842
1843 ver = le32_to_cpu(ucode->ver);
1844 inst_size = le32_to_cpu(ucode->inst_size);
1845 data_size = le32_to_cpu(ucode->data_size);
1846 init_size = le32_to_cpu(ucode->init_size);
1847 init_data_size = le32_to_cpu(ucode->init_data_size);
1848 boot_size = le32_to_cpu(ucode->boot_size);
1849
1850 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1851 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1852 inst_size);
1853 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1854 data_size);
1855 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1856 init_size);
1857 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1858 init_data_size);
1859 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1860 boot_size);
1861
1862 /* Verify size of file vs. image size info in file's header */
1863 if (ucode_raw->size < sizeof(*ucode) +
1864 inst_size + data_size + init_size +
1865 init_data_size + boot_size) {
1866
1867 IWL_DEBUG_INFO("uCode file size %d too small\n",
1868 (int)ucode_raw->size);
1869 ret = -EINVAL;
1870 goto err_release;
1871 }
1872
1873 /* Verify that uCode images will fit in card's SRAM */
1874 if (inst_size > priv->hw_params.max_inst_size) {
1875 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1876 inst_size);
1877 ret = -EINVAL;
1878 goto err_release;
1879 }
1880
1881 if (data_size > priv->hw_params.max_data_size) {
1882 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1883 data_size);
1884 ret = -EINVAL;
1885 goto err_release;
1886 }
1887 if (init_size > priv->hw_params.max_inst_size) {
1888 IWL_DEBUG_INFO
1889 ("uCode init instr len %d too large to fit in\n",
1890 init_size);
1891 ret = -EINVAL;
1892 goto err_release;
1893 }
1894 if (init_data_size > priv->hw_params.max_data_size) {
1895 IWL_DEBUG_INFO
1896 ("uCode init data len %d too large to fit in\n",
1897 init_data_size);
1898 ret = -EINVAL;
1899 goto err_release;
1900 }
1901 if (boot_size > priv->hw_params.max_bsm_size) {
1902 IWL_DEBUG_INFO
1903 ("uCode boot instr len %d too large to fit in\n",
1904 boot_size);
1905 ret = -EINVAL;
1906 goto err_release;
1907 }
1908
1909 /* Allocate ucode buffers for card's bus-master loading ... */
1910
1911 /* Runtime instructions and 2 copies of data:
1912 * 1) unmodified from disk
1913 * 2) backup cache for save/restore during power-downs */
1914 priv->ucode_code.len = inst_size;
1915 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1916
1917 priv->ucode_data.len = data_size;
1918 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1919
1920 priv->ucode_data_backup.len = data_size;
1921 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1922
1923 /* Initialization instructions and data */
1924 if (init_size && init_data_size) {
1925 priv->ucode_init.len = init_size;
1926 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1927
1928 priv->ucode_init_data.len = init_data_size;
1929 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1930
1931 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1932 goto err_pci_alloc;
1933 }
1934
1935 /* Bootstrap (instructions only, no data) */
1936 if (boot_size) {
1937 priv->ucode_boot.len = boot_size;
1938 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1939
1940 if (!priv->ucode_boot.v_addr)
1941 goto err_pci_alloc;
1942 }
1943
1944 /* Copy images into buffers for card's bus-master reads ... */
1945
1946 /* Runtime instructions (first block of data in file) */
1947 src = &ucode->data[0];
1948 len = priv->ucode_code.len;
1949 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1950 memcpy(priv->ucode_code.v_addr, src, len);
1951 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1952 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1953
1954 /* Runtime data (2nd block)
1955 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1956 src = &ucode->data[inst_size];
1957 len = priv->ucode_data.len;
1958 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1959 memcpy(priv->ucode_data.v_addr, src, len);
1960 memcpy(priv->ucode_data_backup.v_addr, src, len);
1961
1962 /* Initialization instructions (3rd block) */
1963 if (init_size) {
1964 src = &ucode->data[inst_size + data_size];
1965 len = priv->ucode_init.len;
1966 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1967 len);
1968 memcpy(priv->ucode_init.v_addr, src, len);
1969 }
1970
1971 /* Initialization data (4th block) */
1972 if (init_data_size) {
1973 src = &ucode->data[inst_size + data_size + init_size];
1974 len = priv->ucode_init_data.len;
1975 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1976 len);
1977 memcpy(priv->ucode_init_data.v_addr, src, len);
1978 }
1979
1980 /* Bootstrap instructions (5th block) */
1981 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1982 len = priv->ucode_boot.len;
1983 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1984 memcpy(priv->ucode_boot.v_addr, src, len);
1985
1986 /* We have our copies now, allow OS release its copies */
1987 release_firmware(ucode_raw);
1988 return 0;
1989
1990 err_pci_alloc:
1991 IWL_ERROR("failed to allocate pci memory\n");
1992 ret = -ENOMEM;
1993 iwl4965_dealloc_ucode_pci(priv);
1994
1995 err_release:
1996 release_firmware(ucode_raw);
1997
1998 error:
1999 return ret;
2000 }
2001
2002 /**
2003 * iwl_alive_start - called after REPLY_ALIVE notification received
2004 * from protocol/runtime uCode (initialization uCode's
2005 * Alive gets handled by iwl_init_alive_start()).
2006 */
2007 static void iwl_alive_start(struct iwl_priv *priv)
2008 {
2009 int ret = 0;
2010
2011 IWL_DEBUG_INFO("Runtime Alive received.\n");
2012
2013 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2014 /* We had an error bringing up the hardware, so take it
2015 * all the way back down so we can try again */
2016 IWL_DEBUG_INFO("Alive failed.\n");
2017 goto restart;
2018 }
2019
2020 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2021 * This is a paranoid check, because we would not have gotten the
2022 * "runtime" alive if code weren't properly loaded. */
2023 if (iwl_verify_ucode(priv)) {
2024 /* Runtime instruction load was bad;
2025 * take it all the way back down so we can try again */
2026 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2027 goto restart;
2028 }
2029
2030 iwl_clear_stations_table(priv);
2031 ret = priv->cfg->ops->lib->alive_notify(priv);
2032 if (ret) {
2033 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2034 ret);
2035 goto restart;
2036 }
2037
2038 /* After the ALIVE response, we can send host commands to 4965 uCode */
2039 set_bit(STATUS_ALIVE, &priv->status);
2040
2041 if (iwl_is_rfkill(priv))
2042 return;
2043
2044 ieee80211_wake_queues(priv->hw);
2045
2046 priv->active_rate = priv->rates_mask;
2047 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2048
2049 if (iwl_is_associated(priv)) {
2050 struct iwl_rxon_cmd *active_rxon =
2051 (struct iwl_rxon_cmd *)&priv->active_rxon;
2052
2053 memcpy(&priv->staging_rxon, &priv->active_rxon,
2054 sizeof(priv->staging_rxon));
2055 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2056 } else {
2057 /* Initialize our rx_config data */
2058 iwl4965_connection_init_rx_config(priv);
2059 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2060 }
2061
2062 /* Configure Bluetooth device coexistence support */
2063 iwl4965_send_bt_config(priv);
2064
2065 iwl_reset_run_time_calib(priv);
2066
2067 /* Configure the adapter for unassociated operation */
2068 iwl4965_commit_rxon(priv);
2069
2070 /* At this point, the NIC is initialized and operational */
2071 iwl_rf_kill_ct_config(priv);
2072
2073 iwl_leds_register(priv);
2074
2075 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2076 set_bit(STATUS_READY, &priv->status);
2077 wake_up_interruptible(&priv->wait_command_queue);
2078
2079 if (priv->error_recovering)
2080 iwl4965_error_recovery(priv);
2081
2082 iwl_power_update_mode(priv, 1);
2083
2084 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2085 iwl4965_set_mode(priv, priv->iw_mode);
2086
2087 return;
2088
2089 restart:
2090 queue_work(priv->workqueue, &priv->restart);
2091 }
2092
2093 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2094
2095 static void __iwl4965_down(struct iwl_priv *priv)
2096 {
2097 unsigned long flags;
2098 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2099
2100 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2101
2102 if (!exit_pending)
2103 set_bit(STATUS_EXIT_PENDING, &priv->status);
2104
2105 iwl_leds_unregister(priv);
2106
2107 iwl_clear_stations_table(priv);
2108
2109 /* Unblock any waiting calls */
2110 wake_up_interruptible_all(&priv->wait_command_queue);
2111
2112 /* Wipe out the EXIT_PENDING status bit if we are not actually
2113 * exiting the module */
2114 if (!exit_pending)
2115 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2116
2117 /* stop and reset the on-board processor */
2118 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2119
2120 /* tell the device to stop sending interrupts */
2121 spin_lock_irqsave(&priv->lock, flags);
2122 iwl4965_disable_interrupts(priv);
2123 spin_unlock_irqrestore(&priv->lock, flags);
2124 iwl_synchronize_irq(priv);
2125
2126 if (priv->mac80211_registered)
2127 ieee80211_stop_queues(priv->hw);
2128
2129 /* If we have not previously called iwl4965_init() then
2130 * clear all bits but the RF Kill and SUSPEND bits and return */
2131 if (!iwl_is_init(priv)) {
2132 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2133 STATUS_RF_KILL_HW |
2134 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2135 STATUS_RF_KILL_SW |
2136 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2137 STATUS_GEO_CONFIGURED |
2138 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2139 STATUS_IN_SUSPEND |
2140 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2141 STATUS_EXIT_PENDING;
2142 goto exit;
2143 }
2144
2145 /* ...otherwise clear out all the status bits but the RF Kill and
2146 * SUSPEND bits and continue taking the NIC down. */
2147 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2148 STATUS_RF_KILL_HW |
2149 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2150 STATUS_RF_KILL_SW |
2151 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2152 STATUS_GEO_CONFIGURED |
2153 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2154 STATUS_IN_SUSPEND |
2155 test_bit(STATUS_FW_ERROR, &priv->status) <<
2156 STATUS_FW_ERROR |
2157 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2158 STATUS_EXIT_PENDING;
2159
2160 spin_lock_irqsave(&priv->lock, flags);
2161 iwl_clear_bit(priv, CSR_GP_CNTRL,
2162 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2163 spin_unlock_irqrestore(&priv->lock, flags);
2164
2165 iwl_txq_ctx_stop(priv);
2166 iwl_rxq_stop(priv);
2167
2168 spin_lock_irqsave(&priv->lock, flags);
2169 if (!iwl_grab_nic_access(priv)) {
2170 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2171 APMG_CLK_VAL_DMA_CLK_RQT);
2172 iwl_release_nic_access(priv);
2173 }
2174 spin_unlock_irqrestore(&priv->lock, flags);
2175
2176 udelay(5);
2177
2178 /* FIXME: apm_ops.suspend(priv) */
2179 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2180 priv->cfg->ops->lib->apm_ops.stop(priv);
2181 else
2182 priv->cfg->ops->lib->apm_ops.reset(priv);
2183 priv->cfg->ops->lib->free_shared_mem(priv);
2184
2185 exit:
2186 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2187
2188 if (priv->ibss_beacon)
2189 dev_kfree_skb(priv->ibss_beacon);
2190 priv->ibss_beacon = NULL;
2191
2192 /* clear out any free frames */
2193 iwl_clear_free_frames(priv);
2194 }
2195
2196 static void iwl4965_down(struct iwl_priv *priv)
2197 {
2198 mutex_lock(&priv->mutex);
2199 __iwl4965_down(priv);
2200 mutex_unlock(&priv->mutex);
2201
2202 iwl_cancel_deferred_work(priv);
2203 }
2204
2205 #define MAX_HW_RESTARTS 5
2206
2207 static int __iwl4965_up(struct iwl_priv *priv)
2208 {
2209 int i;
2210 int ret;
2211
2212 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2213 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2214 return -EIO;
2215 }
2216
2217 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2218 IWL_ERROR("ucode not available for device bringup\n");
2219 return -EIO;
2220 }
2221
2222 /* If platform's RF_KILL switch is NOT set to KILL */
2223 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2224 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2225 else
2226 set_bit(STATUS_RF_KILL_HW, &priv->status);
2227
2228 if (iwl_is_rfkill(priv)) {
2229 iwl4965_enable_interrupts(priv);
2230 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2231 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2232 return 0;
2233 }
2234
2235 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2236
2237 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2238 if (ret) {
2239 IWL_ERROR("Unable to allocate shared memory\n");
2240 return ret;
2241 }
2242
2243 ret = iwl_hw_nic_init(priv);
2244 if (ret) {
2245 IWL_ERROR("Unable to init nic\n");
2246 return ret;
2247 }
2248
2249 /* make sure rfkill handshake bits are cleared */
2250 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2251 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2252 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2253
2254 /* clear (again), then enable host interrupts */
2255 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2256 iwl4965_enable_interrupts(priv);
2257
2258 /* really make sure rfkill handshake bits are cleared */
2259 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2260 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2261
2262 /* Copy original ucode data image from disk into backup cache.
2263 * This will be used to initialize the on-board processor's
2264 * data SRAM for a clean start when the runtime program first loads. */
2265 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2266 priv->ucode_data.len);
2267
2268 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2269
2270 iwl_clear_stations_table(priv);
2271
2272 /* load bootstrap state machine,
2273 * load bootstrap program into processor's memory,
2274 * prepare to load the "initialize" uCode */
2275 ret = priv->cfg->ops->lib->load_ucode(priv);
2276
2277 if (ret) {
2278 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2279 continue;
2280 }
2281
2282 /* Clear out the uCode error bit if it is set */
2283 clear_bit(STATUS_FW_ERROR, &priv->status);
2284
2285 /* start card; "initialize" will load runtime ucode */
2286 iwl4965_nic_start(priv);
2287
2288 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2289
2290 return 0;
2291 }
2292
2293 set_bit(STATUS_EXIT_PENDING, &priv->status);
2294 __iwl4965_down(priv);
2295 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2296
2297 /* tried to restart and config the device for as long as our
2298 * patience could withstand */
2299 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2300 return -EIO;
2301 }
2302
2303
2304 /*****************************************************************************
2305 *
2306 * Workqueue callbacks
2307 *
2308 *****************************************************************************/
2309
2310 static void iwl_bg_init_alive_start(struct work_struct *data)
2311 {
2312 struct iwl_priv *priv =
2313 container_of(data, struct iwl_priv, init_alive_start.work);
2314
2315 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2316 return;
2317
2318 mutex_lock(&priv->mutex);
2319 priv->cfg->ops->lib->init_alive_start(priv);
2320 mutex_unlock(&priv->mutex);
2321 }
2322
2323 static void iwl_bg_alive_start(struct work_struct *data)
2324 {
2325 struct iwl_priv *priv =
2326 container_of(data, struct iwl_priv, alive_start.work);
2327
2328 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2329 return;
2330
2331 mutex_lock(&priv->mutex);
2332 iwl_alive_start(priv);
2333 mutex_unlock(&priv->mutex);
2334 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2335 }
2336
2337 static void iwl4965_bg_rf_kill(struct work_struct *work)
2338 {
2339 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2340
2341 wake_up_interruptible(&priv->wait_command_queue);
2342
2343 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2344 return;
2345
2346 mutex_lock(&priv->mutex);
2347
2348 if (!iwl_is_rfkill(priv)) {
2349 IWL_DEBUG(IWL_DL_RF_KILL,
2350 "HW and/or SW RF Kill no longer active, restarting "
2351 "device\n");
2352 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2353 queue_work(priv->workqueue, &priv->restart);
2354 } else {
2355 /* make sure mac80211 stop sending Tx frame */
2356 if (priv->mac80211_registered)
2357 ieee80211_stop_queues(priv->hw);
2358
2359 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2360 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2361 "disabled by SW switch\n");
2362 else
2363 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2364 "Kill switch must be turned off for "
2365 "wireless networking to work.\n");
2366 }
2367 mutex_unlock(&priv->mutex);
2368 iwl_rfkill_set_hw_state(priv);
2369 }
2370
2371 static void iwl4965_bg_set_monitor(struct work_struct *work)
2372 {
2373 struct iwl_priv *priv = container_of(work,
2374 struct iwl_priv, set_monitor);
2375 int ret;
2376
2377 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2378
2379 mutex_lock(&priv->mutex);
2380
2381 ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2382
2383 if (ret) {
2384 if (ret == -EAGAIN)
2385 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2386 else
2387 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2388 }
2389
2390 mutex_unlock(&priv->mutex);
2391 }
2392
2393 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2394 {
2395 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2396 run_time_calib_work);
2397
2398 mutex_lock(&priv->mutex);
2399
2400 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2401 test_bit(STATUS_SCANNING, &priv->status)) {
2402 mutex_unlock(&priv->mutex);
2403 return;
2404 }
2405
2406 if (priv->start_calib) {
2407 iwl_chain_noise_calibration(priv, &priv->statistics);
2408
2409 iwl_sensitivity_calibration(priv, &priv->statistics);
2410 }
2411
2412 mutex_unlock(&priv->mutex);
2413 return;
2414 }
2415
2416 static void iwl4965_bg_up(struct work_struct *data)
2417 {
2418 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2419
2420 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2421 return;
2422
2423 mutex_lock(&priv->mutex);
2424 __iwl4965_up(priv);
2425 mutex_unlock(&priv->mutex);
2426 iwl_rfkill_set_hw_state(priv);
2427 }
2428
2429 static void iwl4965_bg_restart(struct work_struct *data)
2430 {
2431 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2432
2433 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2434 return;
2435
2436 iwl4965_down(priv);
2437 queue_work(priv->workqueue, &priv->up);
2438 }
2439
2440 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2441 {
2442 struct iwl_priv *priv =
2443 container_of(data, struct iwl_priv, rx_replenish);
2444
2445 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2446 return;
2447
2448 mutex_lock(&priv->mutex);
2449 iwl_rx_replenish(priv);
2450 mutex_unlock(&priv->mutex);
2451 }
2452
2453 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2454
2455 static void iwl4965_post_associate(struct iwl_priv *priv)
2456 {
2457 struct ieee80211_conf *conf = NULL;
2458 int ret = 0;
2459 unsigned long flags;
2460
2461 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2462 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2463 return;
2464 }
2465
2466 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2467 priv->assoc_id, priv->active_rxon.bssid_addr);
2468
2469
2470 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2471 return;
2472
2473
2474 if (!priv->vif || !priv->is_open)
2475 return;
2476
2477 iwl_power_cancel_timeout(priv);
2478 iwl_scan_cancel_timeout(priv, 200);
2479
2480 conf = ieee80211_get_hw_conf(priv->hw);
2481
2482 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2483 iwl4965_commit_rxon(priv);
2484
2485 iwl_setup_rxon_timing(priv);
2486 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2487 sizeof(priv->rxon_timing), &priv->rxon_timing);
2488 if (ret)
2489 IWL_WARNING("REPLY_RXON_TIMING failed - "
2490 "Attempting to continue.\n");
2491
2492 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2493
2494 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2495
2496 iwl_set_rxon_chain(priv);
2497 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2498
2499 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2500 priv->assoc_id, priv->beacon_int);
2501
2502 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2503 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2504 else
2505 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2506
2507 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2508 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2509 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2510 else
2511 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2512
2513 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2514 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2515
2516 }
2517
2518 iwl4965_commit_rxon(priv);
2519
2520 switch (priv->iw_mode) {
2521 case NL80211_IFTYPE_STATION:
2522 break;
2523
2524 case NL80211_IFTYPE_ADHOC:
2525
2526 /* assume default assoc id */
2527 priv->assoc_id = 1;
2528
2529 iwl_rxon_add_station(priv, priv->bssid, 0);
2530 iwl4965_send_beacon_cmd(priv);
2531
2532 break;
2533
2534 default:
2535 IWL_ERROR("%s Should not be called in %d mode\n",
2536 __func__, priv->iw_mode);
2537 break;
2538 }
2539
2540 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2541 priv->assoc_station_added = 1;
2542
2543 spin_lock_irqsave(&priv->lock, flags);
2544 iwl_activate_qos(priv, 0);
2545 spin_unlock_irqrestore(&priv->lock, flags);
2546
2547 /* the chain noise calibration will enabled PM upon completion
2548 * If chain noise has already been run, then we need to enable
2549 * power management here */
2550 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2551 iwl_power_enable_management(priv);
2552
2553 /* Enable Rx differential gain and sensitivity calibrations */
2554 iwl_chain_noise_reset(priv);
2555 priv->start_calib = 1;
2556
2557 }
2558
2559 /*****************************************************************************
2560 *
2561 * mac80211 entry point functions
2562 *
2563 *****************************************************************************/
2564
2565 #define UCODE_READY_TIMEOUT (4 * HZ)
2566
2567 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2568 {
2569 struct iwl_priv *priv = hw->priv;
2570 int ret;
2571 u16 pci_cmd;
2572
2573 IWL_DEBUG_MAC80211("enter\n");
2574
2575 if (pci_enable_device(priv->pci_dev)) {
2576 IWL_ERROR("Fail to pci_enable_device\n");
2577 return -ENODEV;
2578 }
2579 pci_restore_state(priv->pci_dev);
2580 pci_enable_msi(priv->pci_dev);
2581
2582 /* enable interrupts if needed: hw bug w/a */
2583 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2584 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2585 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2586 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2587 }
2588
2589 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2590 DRV_NAME, priv);
2591 if (ret) {
2592 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2593 goto out_disable_msi;
2594 }
2595
2596 /* we should be verifying the device is ready to be opened */
2597 mutex_lock(&priv->mutex);
2598
2599 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2600 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2601 * ucode filename and max sizes are card-specific. */
2602
2603 if (!priv->ucode_code.len) {
2604 ret = iwl4965_read_ucode(priv);
2605 if (ret) {
2606 IWL_ERROR("Could not read microcode: %d\n", ret);
2607 mutex_unlock(&priv->mutex);
2608 goto out_release_irq;
2609 }
2610 }
2611
2612 ret = __iwl4965_up(priv);
2613
2614 mutex_unlock(&priv->mutex);
2615
2616 iwl_rfkill_set_hw_state(priv);
2617
2618 if (ret)
2619 goto out_release_irq;
2620
2621 if (iwl_is_rfkill(priv))
2622 goto out;
2623
2624 IWL_DEBUG_INFO("Start UP work done.\n");
2625
2626 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2627 return 0;
2628
2629 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2630 * mac80211 will not be run successfully. */
2631 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2632 test_bit(STATUS_READY, &priv->status),
2633 UCODE_READY_TIMEOUT);
2634 if (!ret) {
2635 if (!test_bit(STATUS_READY, &priv->status)) {
2636 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2637 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2638 ret = -ETIMEDOUT;
2639 goto out_release_irq;
2640 }
2641 }
2642
2643 out:
2644 priv->is_open = 1;
2645 IWL_DEBUG_MAC80211("leave\n");
2646 return 0;
2647
2648 out_release_irq:
2649 free_irq(priv->pci_dev->irq, priv);
2650 out_disable_msi:
2651 pci_disable_msi(priv->pci_dev);
2652 pci_disable_device(priv->pci_dev);
2653 priv->is_open = 0;
2654 IWL_DEBUG_MAC80211("leave - failed\n");
2655 return ret;
2656 }
2657
2658 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2659 {
2660 struct iwl_priv *priv = hw->priv;
2661
2662 IWL_DEBUG_MAC80211("enter\n");
2663
2664 if (!priv->is_open) {
2665 IWL_DEBUG_MAC80211("leave - skip\n");
2666 return;
2667 }
2668
2669 priv->is_open = 0;
2670
2671 if (iwl_is_ready_rf(priv)) {
2672 /* stop mac, cancel any scan request and clear
2673 * RXON_FILTER_ASSOC_MSK BIT
2674 */
2675 mutex_lock(&priv->mutex);
2676 iwl_scan_cancel_timeout(priv, 100);
2677 mutex_unlock(&priv->mutex);
2678 }
2679
2680 iwl4965_down(priv);
2681
2682 flush_workqueue(priv->workqueue);
2683 free_irq(priv->pci_dev->irq, priv);
2684 pci_disable_msi(priv->pci_dev);
2685 pci_save_state(priv->pci_dev);
2686 pci_disable_device(priv->pci_dev);
2687
2688 IWL_DEBUG_MAC80211("leave\n");
2689 }
2690
2691 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2692 {
2693 struct iwl_priv *priv = hw->priv;
2694
2695 IWL_DEBUG_MACDUMP("enter\n");
2696
2697 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2698 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2699
2700 if (iwl_tx_skb(priv, skb))
2701 dev_kfree_skb_any(skb);
2702
2703 IWL_DEBUG_MACDUMP("leave\n");
2704 return 0;
2705 }
2706
2707 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2708 struct ieee80211_if_init_conf *conf)
2709 {
2710 struct iwl_priv *priv = hw->priv;
2711 unsigned long flags;
2712
2713 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2714
2715 if (priv->vif) {
2716 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2717 return -EOPNOTSUPP;
2718 }
2719
2720 spin_lock_irqsave(&priv->lock, flags);
2721 priv->vif = conf->vif;
2722
2723 spin_unlock_irqrestore(&priv->lock, flags);
2724
2725 mutex_lock(&priv->mutex);
2726
2727 if (conf->mac_addr) {
2728 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2729 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2730 }
2731
2732 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2733 /* we are not ready, will run again when ready */
2734 set_bit(STATUS_MODE_PENDING, &priv->status);
2735
2736 mutex_unlock(&priv->mutex);
2737
2738 IWL_DEBUG_MAC80211("leave\n");
2739 return 0;
2740 }
2741
2742 /**
2743 * iwl4965_mac_config - mac80211 config callback
2744 *
2745 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2746 * be set inappropriately and the driver currently sets the hardware up to
2747 * use it whenever needed.
2748 */
2749 static int iwl4965_mac_config(struct ieee80211_hw *hw, u32 changed)
2750 {
2751 struct iwl_priv *priv = hw->priv;
2752 const struct iwl_channel_info *ch_info;
2753 struct ieee80211_conf *conf = &hw->conf;
2754 unsigned long flags;
2755 int ret = 0;
2756 u16 channel;
2757
2758 mutex_lock(&priv->mutex);
2759 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2760
2761 priv->current_ht_config.is_ht = conf->ht.enabled;
2762
2763 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2764 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2765 goto out;
2766 }
2767
2768 if (!conf->radio_enabled)
2769 iwl_radio_kill_sw_disable_radio(priv);
2770
2771 if (!iwl_is_ready(priv)) {
2772 IWL_DEBUG_MAC80211("leave - not ready\n");
2773 ret = -EIO;
2774 goto out;
2775 }
2776
2777 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2778 test_bit(STATUS_SCANNING, &priv->status))) {
2779 IWL_DEBUG_MAC80211("leave - scanning\n");
2780 mutex_unlock(&priv->mutex);
2781 return 0;
2782 }
2783
2784 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2785 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2786 if (!is_channel_valid(ch_info)) {
2787 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2788 ret = -EINVAL;
2789 goto out;
2790 }
2791
2792 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2793 !is_channel_ibss(ch_info)) {
2794 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2795 conf->channel->hw_value, conf->channel->band);
2796 ret = -EINVAL;
2797 goto out;
2798 }
2799
2800 spin_lock_irqsave(&priv->lock, flags);
2801
2802
2803 /* if we are switching from ht to 2.4 clear flags
2804 * from any ht related info since 2.4 does not
2805 * support ht */
2806 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2807 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2808 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2809 #endif
2810 )
2811 priv->staging_rxon.flags = 0;
2812
2813 iwl_set_rxon_channel(priv, conf->channel);
2814
2815 iwl_set_flags_for_band(priv, conf->channel->band);
2816
2817 /* The list of supported rates and rate mask can be different
2818 * for each band; since the band may have changed, reset
2819 * the rate mask to what mac80211 lists */
2820 iwl4965_set_rate(priv);
2821
2822 spin_unlock_irqrestore(&priv->lock, flags);
2823
2824 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2825 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2826 iwl4965_hw_channel_switch(priv, conf->channel);
2827 goto out;
2828 }
2829 #endif
2830
2831 if (!conf->radio_enabled) {
2832 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2833 goto out;
2834 }
2835
2836 if (iwl_is_rfkill(priv)) {
2837 IWL_DEBUG_MAC80211("leave - RF kill\n");
2838 ret = -EIO;
2839 goto out;
2840 }
2841
2842 if (conf->flags & IEEE80211_CONF_PS)
2843 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2844 else
2845 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2846 if (ret)
2847 IWL_DEBUG_MAC80211("Error setting power level\n");
2848
2849 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2850 priv->tx_power_user_lmt, conf->power_level);
2851
2852 iwl_set_tx_power(priv, conf->power_level, false);
2853
2854 iwl4965_set_rate(priv);
2855
2856 if (memcmp(&priv->active_rxon,
2857 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2858 iwl4965_commit_rxon(priv);
2859 else
2860 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2861
2862 IWL_DEBUG_MAC80211("leave\n");
2863
2864 out:
2865 mutex_unlock(&priv->mutex);
2866 return ret;
2867 }
2868
2869 static void iwl4965_config_ap(struct iwl_priv *priv)
2870 {
2871 int ret = 0;
2872 unsigned long flags;
2873
2874 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2875 return;
2876
2877 /* The following should be done only at AP bring up */
2878 if (!iwl_is_associated(priv)) {
2879
2880 /* RXON - unassoc (to set timing command) */
2881 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2882 iwl4965_commit_rxon(priv);
2883
2884 /* RXON Timing */
2885 iwl_setup_rxon_timing(priv);
2886 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2887 sizeof(priv->rxon_timing), &priv->rxon_timing);
2888 if (ret)
2889 IWL_WARNING("REPLY_RXON_TIMING failed - "
2890 "Attempting to continue.\n");
2891
2892 iwl_set_rxon_chain(priv);
2893
2894 /* FIXME: what should be the assoc_id for AP? */
2895 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2896 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2897 priv->staging_rxon.flags |=
2898 RXON_FLG_SHORT_PREAMBLE_MSK;
2899 else
2900 priv->staging_rxon.flags &=
2901 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2902
2903 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2904 if (priv->assoc_capability &
2905 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2906 priv->staging_rxon.flags |=
2907 RXON_FLG_SHORT_SLOT_MSK;
2908 else
2909 priv->staging_rxon.flags &=
2910 ~RXON_FLG_SHORT_SLOT_MSK;
2911
2912 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2913 priv->staging_rxon.flags &=
2914 ~RXON_FLG_SHORT_SLOT_MSK;
2915 }
2916 /* restore RXON assoc */
2917 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2918 iwl4965_commit_rxon(priv);
2919 spin_lock_irqsave(&priv->lock, flags);
2920 iwl_activate_qos(priv, 1);
2921 spin_unlock_irqrestore(&priv->lock, flags);
2922 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2923 }
2924 iwl4965_send_beacon_cmd(priv);
2925
2926 /* FIXME - we need to add code here to detect a totally new
2927 * configuration, reset the AP, unassoc, rxon timing, assoc,
2928 * clear sta table, add BCAST sta... */
2929 }
2930
2931 /* temporary */
2932 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2933
2934 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2935 struct ieee80211_vif *vif,
2936 struct ieee80211_if_conf *conf)
2937 {
2938 struct iwl_priv *priv = hw->priv;
2939 unsigned long flags;
2940 int rc;
2941
2942 if (conf == NULL)
2943 return -EIO;
2944
2945 if (priv->vif != vif) {
2946 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2947 return 0;
2948 }
2949
2950 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2951 conf->changed & IEEE80211_IFCC_BEACON) {
2952 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2953 if (!beacon)
2954 return -ENOMEM;
2955 rc = iwl4965_mac_beacon_update(hw, beacon);
2956 if (rc)
2957 return rc;
2958 }
2959
2960 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2961 (!conf->ssid_len)) {
2962 IWL_DEBUG_MAC80211
2963 ("Leaving in AP mode because HostAPD is not ready.\n");
2964 return 0;
2965 }
2966
2967 if (!iwl_is_alive(priv))
2968 return -EAGAIN;
2969
2970 mutex_lock(&priv->mutex);
2971
2972 if (conf->bssid)
2973 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2974
2975 /*
2976 * very dubious code was here; the probe filtering flag is never set:
2977 *
2978 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2979 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2980 */
2981
2982 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2983 if (!conf->bssid) {
2984 conf->bssid = priv->mac_addr;
2985 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2986 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2987 conf->bssid);
2988 }
2989 if (priv->ibss_beacon)
2990 dev_kfree_skb(priv->ibss_beacon);
2991
2992 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2993 }
2994
2995 if (iwl_is_rfkill(priv))
2996 goto done;
2997
2998 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2999 !is_multicast_ether_addr(conf->bssid)) {
3000 /* If there is currently a HW scan going on in the background
3001 * then we need to cancel it else the RXON below will fail. */
3002 if (iwl_scan_cancel_timeout(priv, 100)) {
3003 IWL_WARNING("Aborted scan still in progress "
3004 "after 100ms\n");
3005 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3006 mutex_unlock(&priv->mutex);
3007 return -EAGAIN;
3008 }
3009 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3010
3011 /* TODO: Audit driver for usage of these members and see
3012 * if mac80211 deprecates them (priv->bssid looks like it
3013 * shouldn't be there, but I haven't scanned the IBSS code
3014 * to verify) - jpk */
3015 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3016
3017 if (priv->iw_mode == NL80211_IFTYPE_AP)
3018 iwl4965_config_ap(priv);
3019 else {
3020 rc = iwl4965_commit_rxon(priv);
3021 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3022 iwl_rxon_add_station(
3023 priv, priv->active_rxon.bssid_addr, 1);
3024 }
3025
3026 } else {
3027 iwl_scan_cancel_timeout(priv, 100);
3028 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3029 iwl4965_commit_rxon(priv);
3030 }
3031
3032 done:
3033 spin_lock_irqsave(&priv->lock, flags);
3034 if (!conf->ssid_len)
3035 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3036 else
3037 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3038
3039 priv->essid_len = conf->ssid_len;
3040 spin_unlock_irqrestore(&priv->lock, flags);
3041
3042 IWL_DEBUG_MAC80211("leave\n");
3043 mutex_unlock(&priv->mutex);
3044
3045 return 0;
3046 }
3047
3048 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3049 unsigned int changed_flags,
3050 unsigned int *total_flags,
3051 int mc_count, struct dev_addr_list *mc_list)
3052 {
3053 struct iwl_priv *priv = hw->priv;
3054
3055 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3056 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3057 NL80211_IFTYPE_MONITOR,
3058 changed_flags, *total_flags);
3059 /* queue work 'cuz mac80211 is holding a lock which
3060 * prevents us from issuing (synchronous) f/w cmds */
3061 queue_work(priv->workqueue, &priv->set_monitor);
3062 }
3063 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3064 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3065 }
3066
3067 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3068 struct ieee80211_if_init_conf *conf)
3069 {
3070 struct iwl_priv *priv = hw->priv;
3071
3072 IWL_DEBUG_MAC80211("enter\n");
3073
3074 mutex_lock(&priv->mutex);
3075
3076 if (iwl_is_ready_rf(priv)) {
3077 iwl_scan_cancel_timeout(priv, 100);
3078 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3079 iwl4965_commit_rxon(priv);
3080 }
3081 if (priv->vif == conf->vif) {
3082 priv->vif = NULL;
3083 memset(priv->bssid, 0, ETH_ALEN);
3084 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3085 priv->essid_len = 0;
3086 }
3087 mutex_unlock(&priv->mutex);
3088
3089 IWL_DEBUG_MAC80211("leave\n");
3090
3091 }
3092
3093 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3094 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3095 struct ieee80211_vif *vif,
3096 struct ieee80211_bss_conf *bss_conf,
3097 u32 changes)
3098 {
3099 struct iwl_priv *priv = hw->priv;
3100
3101 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3102
3103 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3104 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3105 bss_conf->use_short_preamble);
3106 if (bss_conf->use_short_preamble)
3107 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3108 else
3109 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3110 }
3111
3112 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3113 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3114 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3115 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3116 else
3117 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3118 }
3119
3120 if (changes & BSS_CHANGED_HT) {
3121 iwl4965_ht_conf(priv, bss_conf);
3122 iwl_set_rxon_chain(priv);
3123 }
3124
3125 if (changes & BSS_CHANGED_ASSOC) {
3126 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3127 /* This should never happen as this function should
3128 * never be called from interrupt context. */
3129 if (WARN_ON_ONCE(in_interrupt()))
3130 return;
3131 if (bss_conf->assoc) {
3132 priv->assoc_id = bss_conf->aid;
3133 priv->beacon_int = bss_conf->beacon_int;
3134 priv->power_data.dtim_period = bss_conf->dtim_period;
3135 priv->timestamp = bss_conf->timestamp;
3136 priv->assoc_capability = bss_conf->assoc_capability;
3137
3138 /* we have just associated, don't start scan too early
3139 * leave time for EAPOL exchange to complete
3140 */
3141 priv->next_scan_jiffies = jiffies +
3142 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3143 mutex_lock(&priv->mutex);
3144 iwl4965_post_associate(priv);
3145 mutex_unlock(&priv->mutex);
3146 } else {
3147 priv->assoc_id = 0;
3148 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3149 }
3150 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3151 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3152 iwl_send_rxon_assoc(priv);
3153 }
3154
3155 }
3156
3157 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3158 {
3159 unsigned long flags;
3160 struct iwl_priv *priv = hw->priv;
3161 int ret;
3162
3163 IWL_DEBUG_MAC80211("enter\n");
3164
3165 mutex_lock(&priv->mutex);
3166 spin_lock_irqsave(&priv->lock, flags);
3167
3168 if (!iwl_is_ready_rf(priv)) {
3169 ret = -EIO;
3170 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3171 goto out_unlock;
3172 }
3173
3174 if (priv->iw_mode == NL80211_IFTYPE_AP) { /* APs don't scan */
3175 ret = -EIO;
3176 IWL_ERROR("ERROR: APs don't scan\n");
3177 goto out_unlock;
3178 }
3179
3180 /* We don't schedule scan within next_scan_jiffies period.
3181 * Avoid scanning during possible EAPOL exchange, return
3182 * success immediately.
3183 */
3184 if (priv->next_scan_jiffies &&
3185 time_after(priv->next_scan_jiffies, jiffies)) {
3186 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3187 queue_work(priv->workqueue, &priv->scan_completed);
3188 ret = 0;
3189 goto out_unlock;
3190 }
3191
3192 /* if we just finished scan ask for delay */
3193 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3194 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3195 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3196 queue_work(priv->workqueue, &priv->scan_completed);
3197 ret = 0;
3198 goto out_unlock;
3199 }
3200
3201 if (ssid_len) {
3202 priv->one_direct_scan = 1;
3203 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3204 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3205 } else {
3206 priv->one_direct_scan = 0;
3207 }
3208
3209 ret = iwl_scan_initiate(priv);
3210
3211 IWL_DEBUG_MAC80211("leave\n");
3212
3213 out_unlock:
3214 spin_unlock_irqrestore(&priv->lock, flags);
3215 mutex_unlock(&priv->mutex);
3216
3217 return ret;
3218 }
3219
3220 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3221 struct ieee80211_key_conf *keyconf, const u8 *addr,
3222 u32 iv32, u16 *phase1key)
3223 {
3224 struct iwl_priv *priv = hw->priv;
3225 u8 sta_id = IWL_INVALID_STATION;
3226 unsigned long flags;
3227 __le16 key_flags = 0;
3228 int i;
3229
3230 IWL_DEBUG_MAC80211("enter\n");
3231
3232 sta_id = iwl_find_station(priv, addr);
3233 if (sta_id == IWL_INVALID_STATION) {
3234 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3235 addr);
3236 return;
3237 }
3238
3239 iwl_scan_cancel_timeout(priv, 100);
3240
3241 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3242 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3243 key_flags &= ~STA_KEY_FLG_INVALID;
3244
3245 if (sta_id == priv->hw_params.bcast_sta_id)
3246 key_flags |= STA_KEY_MULTICAST_MSK;
3247
3248 spin_lock_irqsave(&priv->sta_lock, flags);
3249
3250 priv->stations[sta_id].sta.key.key_flags = key_flags;
3251 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3252
3253 for (i = 0; i < 5; i++)
3254 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3255 cpu_to_le16(phase1key[i]);
3256
3257 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3258 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3259
3260 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3261
3262 spin_unlock_irqrestore(&priv->sta_lock, flags);
3263
3264 IWL_DEBUG_MAC80211("leave\n");
3265 }
3266
3267 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3268 const u8 *local_addr, const u8 *addr,
3269 struct ieee80211_key_conf *key)
3270 {
3271 struct iwl_priv *priv = hw->priv;
3272 int ret = 0;
3273 u8 sta_id = IWL_INVALID_STATION;
3274 u8 is_default_wep_key = 0;
3275
3276 IWL_DEBUG_MAC80211("enter\n");
3277
3278 if (priv->hw_params.sw_crypto) {
3279 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3280 return -EOPNOTSUPP;
3281 }
3282
3283 if (is_zero_ether_addr(addr))
3284 /* only support pairwise keys */
3285 return -EOPNOTSUPP;
3286
3287 sta_id = iwl_find_station(priv, addr);
3288 if (sta_id == IWL_INVALID_STATION) {
3289 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3290 addr);
3291 return -EINVAL;
3292
3293 }
3294
3295 mutex_lock(&priv->mutex);
3296 iwl_scan_cancel_timeout(priv, 100);
3297 mutex_unlock(&priv->mutex);
3298
3299 /* If we are getting WEP group key and we didn't receive any key mapping
3300 * so far, we are in legacy wep mode (group key only), otherwise we are
3301 * in 1X mode.
3302 * In legacy wep mode, we use another host command to the uCode */
3303 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3304 priv->iw_mode != NL80211_IFTYPE_AP) {
3305 if (cmd == SET_KEY)
3306 is_default_wep_key = !priv->key_mapping_key;
3307 else
3308 is_default_wep_key =
3309 (key->hw_key_idx == HW_KEY_DEFAULT);
3310 }
3311
3312 switch (cmd) {
3313 case SET_KEY:
3314 if (is_default_wep_key)
3315 ret = iwl_set_default_wep_key(priv, key);
3316 else
3317 ret = iwl_set_dynamic_key(priv, key, sta_id);
3318
3319 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3320 break;
3321 case DISABLE_KEY:
3322 if (is_default_wep_key)
3323 ret = iwl_remove_default_wep_key(priv, key);
3324 else
3325 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3326
3327 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3328 break;
3329 default:
3330 ret = -EINVAL;
3331 }
3332
3333 IWL_DEBUG_MAC80211("leave\n");
3334
3335 return ret;
3336 }
3337
3338 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3339 const struct ieee80211_tx_queue_params *params)
3340 {
3341 struct iwl_priv *priv = hw->priv;
3342 unsigned long flags;
3343 int q;
3344
3345 IWL_DEBUG_MAC80211("enter\n");
3346
3347 if (!iwl_is_ready_rf(priv)) {
3348 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3349 return -EIO;
3350 }
3351
3352 if (queue >= AC_NUM) {
3353 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3354 return 0;
3355 }
3356
3357 if (!priv->qos_data.qos_enable) {
3358 priv->qos_data.qos_active = 0;
3359 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3360 return 0;
3361 }
3362 q = AC_NUM - 1 - queue;
3363
3364 spin_lock_irqsave(&priv->lock, flags);
3365
3366 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3367 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3368 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3369 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3370 cpu_to_le16((params->txop * 32));
3371
3372 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3373 priv->qos_data.qos_active = 1;
3374
3375 if (priv->iw_mode == NL80211_IFTYPE_AP)
3376 iwl_activate_qos(priv, 1);
3377 else if (priv->assoc_id && iwl_is_associated(priv))
3378 iwl_activate_qos(priv, 0);
3379
3380 spin_unlock_irqrestore(&priv->lock, flags);
3381
3382 IWL_DEBUG_MAC80211("leave\n");
3383 return 0;
3384 }
3385
3386 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3387 enum ieee80211_ampdu_mlme_action action,
3388 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3389 {
3390 struct iwl_priv *priv = hw->priv;
3391
3392 IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3393 sta->addr, tid);
3394
3395 if (!(priv->cfg->sku & IWL_SKU_N))
3396 return -EACCES;
3397
3398 switch (action) {
3399 case IEEE80211_AMPDU_RX_START:
3400 IWL_DEBUG_HT("start Rx\n");
3401 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3402 case IEEE80211_AMPDU_RX_STOP:
3403 IWL_DEBUG_HT("stop Rx\n");
3404 return iwl_rx_agg_stop(priv, sta->addr, tid);
3405 case IEEE80211_AMPDU_TX_START:
3406 IWL_DEBUG_HT("start Tx\n");
3407 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3408 case IEEE80211_AMPDU_TX_STOP:
3409 IWL_DEBUG_HT("stop Tx\n");
3410 return iwl_tx_agg_stop(priv, sta->addr, tid);
3411 default:
3412 IWL_DEBUG_HT("unknown\n");
3413 return -EINVAL;
3414 break;
3415 }
3416 return 0;
3417 }
3418 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3419 struct ieee80211_tx_queue_stats *stats)
3420 {
3421 struct iwl_priv *priv = hw->priv;
3422 int i, avail;
3423 struct iwl_tx_queue *txq;
3424 struct iwl_queue *q;
3425 unsigned long flags;
3426
3427 IWL_DEBUG_MAC80211("enter\n");
3428
3429 if (!iwl_is_ready_rf(priv)) {
3430 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3431 return -EIO;
3432 }
3433
3434 spin_lock_irqsave(&priv->lock, flags);
3435
3436 for (i = 0; i < AC_NUM; i++) {
3437 txq = &priv->txq[i];
3438 q = &txq->q;
3439 avail = iwl_queue_space(q);
3440
3441 stats[i].len = q->n_window - avail;
3442 stats[i].limit = q->n_window - q->high_mark;
3443 stats[i].count = q->n_window;
3444
3445 }
3446 spin_unlock_irqrestore(&priv->lock, flags);
3447
3448 IWL_DEBUG_MAC80211("leave\n");
3449
3450 return 0;
3451 }
3452
3453 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3454 struct ieee80211_low_level_stats *stats)
3455 {
3456 struct iwl_priv *priv = hw->priv;
3457
3458 priv = hw->priv;
3459 IWL_DEBUG_MAC80211("enter\n");
3460 IWL_DEBUG_MAC80211("leave\n");
3461
3462 return 0;
3463 }
3464
3465 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3466 {
3467 struct iwl_priv *priv = hw->priv;
3468 unsigned long flags;
3469
3470 mutex_lock(&priv->mutex);
3471 IWL_DEBUG_MAC80211("enter\n");
3472
3473 spin_lock_irqsave(&priv->lock, flags);
3474 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3475 spin_unlock_irqrestore(&priv->lock, flags);
3476
3477 iwl_reset_qos(priv);
3478
3479 spin_lock_irqsave(&priv->lock, flags);
3480 priv->assoc_id = 0;
3481 priv->assoc_capability = 0;
3482 priv->assoc_station_added = 0;
3483
3484 /* new association get rid of ibss beacon skb */
3485 if (priv->ibss_beacon)
3486 dev_kfree_skb(priv->ibss_beacon);
3487
3488 priv->ibss_beacon = NULL;
3489
3490 priv->beacon_int = priv->hw->conf.beacon_int;
3491 priv->timestamp = 0;
3492 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3493 priv->beacon_int = 0;
3494
3495 spin_unlock_irqrestore(&priv->lock, flags);
3496
3497 if (!iwl_is_ready_rf(priv)) {
3498 IWL_DEBUG_MAC80211("leave - not ready\n");
3499 mutex_unlock(&priv->mutex);
3500 return;
3501 }
3502
3503 /* we are restarting association process
3504 * clear RXON_FILTER_ASSOC_MSK bit
3505 */
3506 if (priv->iw_mode != NL80211_IFTYPE_AP) {
3507 iwl_scan_cancel_timeout(priv, 100);
3508 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3509 iwl4965_commit_rxon(priv);
3510 }
3511
3512 iwl_power_update_mode(priv, 0);
3513
3514 /* Per mac80211.h: This is only used in IBSS mode... */
3515 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3516
3517 /* switch to CAM during association period.
3518 * the ucode will block any association/authentication
3519 * frome during assiciation period if it can not hear
3520 * the AP because of PM. the timer enable PM back is
3521 * association do not complete
3522 */
3523 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3524 IEEE80211_CHAN_RADAR))
3525 iwl_power_disable_management(priv, 3000);
3526
3527 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3528 mutex_unlock(&priv->mutex);
3529 return;
3530 }
3531
3532 iwl4965_set_rate(priv);
3533
3534 mutex_unlock(&priv->mutex);
3535
3536 IWL_DEBUG_MAC80211("leave\n");
3537 }
3538
3539 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3540 {
3541 struct iwl_priv *priv = hw->priv;
3542 unsigned long flags;
3543 __le64 timestamp;
3544
3545 mutex_lock(&priv->mutex);
3546 IWL_DEBUG_MAC80211("enter\n");
3547
3548 if (!iwl_is_ready_rf(priv)) {
3549 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3550 mutex_unlock(&priv->mutex);
3551 return -EIO;
3552 }
3553
3554 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3555 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3556 mutex_unlock(&priv->mutex);
3557 return -EIO;
3558 }
3559
3560 spin_lock_irqsave(&priv->lock, flags);
3561
3562 if (priv->ibss_beacon)
3563 dev_kfree_skb(priv->ibss_beacon);
3564
3565 priv->ibss_beacon = skb;
3566
3567 priv->assoc_id = 0;
3568 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3569 priv->timestamp = le64_to_cpu(timestamp);
3570
3571 IWL_DEBUG_MAC80211("leave\n");
3572 spin_unlock_irqrestore(&priv->lock, flags);
3573
3574 iwl_reset_qos(priv);
3575
3576 iwl4965_post_associate(priv);
3577
3578 mutex_unlock(&priv->mutex);
3579
3580 return 0;
3581 }
3582
3583 /*****************************************************************************
3584 *
3585 * sysfs attributes
3586 *
3587 *****************************************************************************/
3588
3589 #ifdef CONFIG_IWLWIFI_DEBUG
3590
3591 /*
3592 * The following adds a new attribute to the sysfs representation
3593 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3594 * used for controlling the debug level.
3595 *
3596 * See the level definitions in iwl for details.
3597 */
3598
3599 static ssize_t show_debug_level(struct device *d,
3600 struct device_attribute *attr, char *buf)
3601 {
3602 struct iwl_priv *priv = d->driver_data;
3603
3604 return sprintf(buf, "0x%08X\n", priv->debug_level);
3605 }
3606 static ssize_t store_debug_level(struct device *d,
3607 struct device_attribute *attr,
3608 const char *buf, size_t count)
3609 {
3610 struct iwl_priv *priv = d->driver_data;
3611 unsigned long val;
3612 int ret;
3613
3614 ret = strict_strtoul(buf, 0, &val);
3615 if (ret)
3616 printk(KERN_INFO DRV_NAME
3617 ": %s is not in hex or decimal form.\n", buf);
3618 else
3619 priv->debug_level = val;
3620
3621 return strnlen(buf, count);
3622 }
3623
3624 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3625 show_debug_level, store_debug_level);
3626
3627
3628 #endif /* CONFIG_IWLWIFI_DEBUG */
3629
3630
3631 static ssize_t show_version(struct device *d,
3632 struct device_attribute *attr, char *buf)
3633 {
3634 struct iwl_priv *priv = d->driver_data;
3635 struct iwl_alive_resp *palive = &priv->card_alive;
3636 ssize_t pos = 0;
3637 u16 eeprom_ver;
3638
3639 if (palive->is_valid)
3640 pos += sprintf(buf + pos,
3641 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3642 "fw type: 0x%01X 0x%01X\n",
3643 palive->ucode_major, palive->ucode_minor,
3644 palive->sw_rev[0], palive->sw_rev[1],
3645 palive->ver_type, palive->ver_subtype);
3646 else
3647 pos += sprintf(buf + pos, "fw not loaded\n");
3648
3649 if (priv->eeprom) {
3650 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3651 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3652 eeprom_ver);
3653 } else {
3654 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3655 }
3656
3657 return pos;
3658 }
3659
3660 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3661
3662 static ssize_t show_temperature(struct device *d,
3663 struct device_attribute *attr, char *buf)
3664 {
3665 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3666
3667 if (!iwl_is_alive(priv))
3668 return -EAGAIN;
3669
3670 return sprintf(buf, "%d\n", priv->temperature);
3671 }
3672
3673 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3674
3675 static ssize_t show_tx_power(struct device *d,
3676 struct device_attribute *attr, char *buf)
3677 {
3678 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3679 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3680 }
3681
3682 static ssize_t store_tx_power(struct device *d,
3683 struct device_attribute *attr,
3684 const char *buf, size_t count)
3685 {
3686 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3687 unsigned long val;
3688 int ret;
3689
3690 ret = strict_strtoul(buf, 10, &val);
3691 if (ret)
3692 printk(KERN_INFO DRV_NAME
3693 ": %s is not in decimal form.\n", buf);
3694 else
3695 iwl_set_tx_power(priv, val, false);
3696
3697 return count;
3698 }
3699
3700 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3701
3702 static ssize_t show_flags(struct device *d,
3703 struct device_attribute *attr, char *buf)
3704 {
3705 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3706
3707 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3708 }
3709
3710 static ssize_t store_flags(struct device *d,
3711 struct device_attribute *attr,
3712 const char *buf, size_t count)
3713 {
3714 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3715 unsigned long val;
3716 u32 flags;
3717 int ret = strict_strtoul(buf, 0, &val);
3718 if (ret)
3719 return ret;
3720 flags = (u32)val;
3721
3722 mutex_lock(&priv->mutex);
3723 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3724 /* Cancel any currently running scans... */
3725 if (iwl_scan_cancel_timeout(priv, 100))
3726 IWL_WARNING("Could not cancel scan.\n");
3727 else {
3728 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3729 priv->staging_rxon.flags = cpu_to_le32(flags);
3730 iwl4965_commit_rxon(priv);
3731 }
3732 }
3733 mutex_unlock(&priv->mutex);
3734
3735 return count;
3736 }
3737
3738 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3739
3740 static ssize_t show_filter_flags(struct device *d,
3741 struct device_attribute *attr, char *buf)
3742 {
3743 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3744
3745 return sprintf(buf, "0x%04X\n",
3746 le32_to_cpu(priv->active_rxon.filter_flags));
3747 }
3748
3749 static ssize_t store_filter_flags(struct device *d,
3750 struct device_attribute *attr,
3751 const char *buf, size_t count)
3752 {
3753 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3754 unsigned long val;
3755 u32 filter_flags;
3756 int ret = strict_strtoul(buf, 0, &val);
3757 if (ret)
3758 return ret;
3759 filter_flags = (u32)val;
3760
3761 mutex_lock(&priv->mutex);
3762 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3763 /* Cancel any currently running scans... */
3764 if (iwl_scan_cancel_timeout(priv, 100))
3765 IWL_WARNING("Could not cancel scan.\n");
3766 else {
3767 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3768 "0x%04X\n", filter_flags);
3769 priv->staging_rxon.filter_flags =
3770 cpu_to_le32(filter_flags);
3771 iwl4965_commit_rxon(priv);
3772 }
3773 }
3774 mutex_unlock(&priv->mutex);
3775
3776 return count;
3777 }
3778
3779 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3780 store_filter_flags);
3781
3782 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3783
3784 static ssize_t show_measurement(struct device *d,
3785 struct device_attribute *attr, char *buf)
3786 {
3787 struct iwl_priv *priv = dev_get_drvdata(d);
3788 struct iwl4965_spectrum_notification measure_report;
3789 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3790 u8 *data = (u8 *)&measure_report;
3791 unsigned long flags;
3792
3793 spin_lock_irqsave(&priv->lock, flags);
3794 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3795 spin_unlock_irqrestore(&priv->lock, flags);
3796 return 0;
3797 }
3798 memcpy(&measure_report, &priv->measure_report, size);
3799 priv->measurement_status = 0;
3800 spin_unlock_irqrestore(&priv->lock, flags);
3801
3802 while (size && (PAGE_SIZE - len)) {
3803 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3804 PAGE_SIZE - len, 1);
3805 len = strlen(buf);
3806 if (PAGE_SIZE - len)
3807 buf[len++] = '\n';
3808
3809 ofs += 16;
3810 size -= min(size, 16U);
3811 }
3812
3813 return len;
3814 }
3815
3816 static ssize_t store_measurement(struct device *d,
3817 struct device_attribute *attr,
3818 const char *buf, size_t count)
3819 {
3820 struct iwl_priv *priv = dev_get_drvdata(d);
3821 struct ieee80211_measurement_params params = {
3822 .channel = le16_to_cpu(priv->active_rxon.channel),
3823 .start_time = cpu_to_le64(priv->last_tsf),
3824 .duration = cpu_to_le16(1),
3825 };
3826 u8 type = IWL_MEASURE_BASIC;
3827 u8 buffer[32];
3828 u8 channel;
3829
3830 if (count) {
3831 char *p = buffer;
3832 strncpy(buffer, buf, min(sizeof(buffer), count));
3833 channel = simple_strtoul(p, NULL, 0);
3834 if (channel)
3835 params.channel = channel;
3836
3837 p = buffer;
3838 while (*p && *p != ' ')
3839 p++;
3840 if (*p)
3841 type = simple_strtoul(p + 1, NULL, 0);
3842 }
3843
3844 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3845 "channel %d (for '%s')\n", type, params.channel, buf);
3846 iwl4965_get_measurement(priv, &params, type);
3847
3848 return count;
3849 }
3850
3851 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3852 show_measurement, store_measurement);
3853 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3854
3855 static ssize_t store_retry_rate(struct device *d,
3856 struct device_attribute *attr,
3857 const char *buf, size_t count)
3858 {
3859 struct iwl_priv *priv = dev_get_drvdata(d);
3860 long val;
3861 int ret = strict_strtol(buf, 10, &val);
3862 if (!ret)
3863 return ret;
3864
3865 priv->retry_rate = (val > 0) ? val : 1;
3866
3867 return count;
3868 }
3869
3870 static ssize_t show_retry_rate(struct device *d,
3871 struct device_attribute *attr, char *buf)
3872 {
3873 struct iwl_priv *priv = dev_get_drvdata(d);
3874 return sprintf(buf, "%d", priv->retry_rate);
3875 }
3876
3877 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3878 store_retry_rate);
3879
3880 static ssize_t store_power_level(struct device *d,
3881 struct device_attribute *attr,
3882 const char *buf, size_t count)
3883 {
3884 struct iwl_priv *priv = dev_get_drvdata(d);
3885 int ret;
3886 unsigned long mode;
3887
3888
3889 mutex_lock(&priv->mutex);
3890
3891 if (!iwl_is_ready(priv)) {
3892 ret = -EAGAIN;
3893 goto out;
3894 }
3895
3896 ret = strict_strtoul(buf, 10, &mode);
3897 if (ret)
3898 goto out;
3899
3900 ret = iwl_power_set_user_mode(priv, mode);
3901 if (ret) {
3902 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3903 goto out;
3904 }
3905 ret = count;
3906
3907 out:
3908 mutex_unlock(&priv->mutex);
3909 return ret;
3910 }
3911
3912 static ssize_t show_power_level(struct device *d,
3913 struct device_attribute *attr, char *buf)
3914 {
3915 struct iwl_priv *priv = dev_get_drvdata(d);
3916 int mode = priv->power_data.user_power_setting;
3917 int system = priv->power_data.system_power_setting;
3918 int level = priv->power_data.power_mode;
3919 char *p = buf;
3920
3921 switch (system) {
3922 case IWL_POWER_SYS_AUTO:
3923 p += sprintf(p, "SYSTEM:auto");
3924 break;
3925 case IWL_POWER_SYS_AC:
3926 p += sprintf(p, "SYSTEM:ac");
3927 break;
3928 case IWL_POWER_SYS_BATTERY:
3929 p += sprintf(p, "SYSTEM:battery");
3930 break;
3931 }
3932
3933 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3934 p += sprintf(p, "\tINDEX:%d", level);
3935 p += sprintf(p, "\n");
3936 return p - buf + 1;
3937 }
3938
3939 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3940 store_power_level);
3941
3942 static ssize_t show_channels(struct device *d,
3943 struct device_attribute *attr, char *buf)
3944 {
3945
3946 struct iwl_priv *priv = dev_get_drvdata(d);
3947 struct ieee80211_channel *channels = NULL;
3948 const struct ieee80211_supported_band *supp_band = NULL;
3949 int len = 0, i;
3950 int count = 0;
3951
3952 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3953 return -EAGAIN;
3954
3955 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3956 channels = supp_band->channels;
3957 count = supp_band->n_channels;
3958
3959 len += sprintf(&buf[len],
3960 "Displaying %d channels in 2.4GHz band "
3961 "(802.11bg):\n", count);
3962
3963 for (i = 0; i < count; i++)
3964 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3965 ieee80211_frequency_to_channel(
3966 channels[i].center_freq),
3967 channels[i].max_power,
3968 channels[i].flags & IEEE80211_CHAN_RADAR ?
3969 " (IEEE 802.11h required)" : "",
3970 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3971 || (channels[i].flags &
3972 IEEE80211_CHAN_RADAR)) ? "" :
3973 ", IBSS",
3974 channels[i].flags &
3975 IEEE80211_CHAN_PASSIVE_SCAN ?
3976 "passive only" : "active/passive");
3977
3978 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3979 channels = supp_band->channels;
3980 count = supp_band->n_channels;
3981
3982 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3983 "(802.11a):\n", count);
3984
3985 for (i = 0; i < count; i++)
3986 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3987 ieee80211_frequency_to_channel(
3988 channels[i].center_freq),
3989 channels[i].max_power,
3990 channels[i].flags & IEEE80211_CHAN_RADAR ?
3991 " (IEEE 802.11h required)" : "",
3992 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3993 || (channels[i].flags &
3994 IEEE80211_CHAN_RADAR)) ? "" :
3995 ", IBSS",
3996 channels[i].flags &
3997 IEEE80211_CHAN_PASSIVE_SCAN ?
3998 "passive only" : "active/passive");
3999
4000 return len;
4001 }
4002
4003 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4004
4005 static ssize_t show_statistics(struct device *d,
4006 struct device_attribute *attr, char *buf)
4007 {
4008 struct iwl_priv *priv = dev_get_drvdata(d);
4009 u32 size = sizeof(struct iwl_notif_statistics);
4010 u32 len = 0, ofs = 0;
4011 u8 *data = (u8 *)&priv->statistics;
4012 int rc = 0;
4013
4014 if (!iwl_is_alive(priv))
4015 return -EAGAIN;
4016
4017 mutex_lock(&priv->mutex);
4018 rc = iwl_send_statistics_request(priv, 0);
4019 mutex_unlock(&priv->mutex);
4020
4021 if (rc) {
4022 len = sprintf(buf,
4023 "Error sending statistics request: 0x%08X\n", rc);
4024 return len;
4025 }
4026
4027 while (size && (PAGE_SIZE - len)) {
4028 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4029 PAGE_SIZE - len, 1);
4030 len = strlen(buf);
4031 if (PAGE_SIZE - len)
4032 buf[len++] = '\n';
4033
4034 ofs += 16;
4035 size -= min(size, 16U);
4036 }
4037
4038 return len;
4039 }
4040
4041 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4042
4043 static ssize_t show_status(struct device *d,
4044 struct device_attribute *attr, char *buf)
4045 {
4046 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4047 if (!iwl_is_alive(priv))
4048 return -EAGAIN;
4049 return sprintf(buf, "0x%08x\n", (int)priv->status);
4050 }
4051
4052 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4053
4054 /*****************************************************************************
4055 *
4056 * driver setup and teardown
4057 *
4058 *****************************************************************************/
4059
4060 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4061 {
4062 priv->workqueue = create_workqueue(DRV_NAME);
4063
4064 init_waitqueue_head(&priv->wait_command_queue);
4065
4066 INIT_WORK(&priv->up, iwl4965_bg_up);
4067 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4068 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4069 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4070 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4071 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4072 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4073 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4074 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4075
4076 iwl_setup_scan_deferred_work(priv);
4077 iwl_setup_power_deferred_work(priv);
4078
4079 if (priv->cfg->ops->lib->setup_deferred_work)
4080 priv->cfg->ops->lib->setup_deferred_work(priv);
4081
4082 init_timer(&priv->statistics_periodic);
4083 priv->statistics_periodic.data = (unsigned long)priv;
4084 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4085
4086 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4087 iwl4965_irq_tasklet, (unsigned long)priv);
4088 }
4089
4090 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4091 {
4092 if (priv->cfg->ops->lib->cancel_deferred_work)
4093 priv->cfg->ops->lib->cancel_deferred_work(priv);
4094
4095 cancel_delayed_work_sync(&priv->init_alive_start);
4096 cancel_delayed_work(&priv->scan_check);
4097 cancel_delayed_work_sync(&priv->set_power_save);
4098 cancel_delayed_work(&priv->alive_start);
4099 cancel_work_sync(&priv->beacon_update);
4100 del_timer_sync(&priv->statistics_periodic);
4101 }
4102
4103 static struct attribute *iwl4965_sysfs_entries[] = {
4104 &dev_attr_channels.attr,
4105 &dev_attr_flags.attr,
4106 &dev_attr_filter_flags.attr,
4107 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4108 &dev_attr_measurement.attr,
4109 #endif
4110 &dev_attr_power_level.attr,
4111 &dev_attr_retry_rate.attr,
4112 &dev_attr_statistics.attr,
4113 &dev_attr_status.attr,
4114 &dev_attr_temperature.attr,
4115 &dev_attr_tx_power.attr,
4116 #ifdef CONFIG_IWLWIFI_DEBUG
4117 &dev_attr_debug_level.attr,
4118 #endif
4119 &dev_attr_version.attr,
4120
4121 NULL
4122 };
4123
4124 static struct attribute_group iwl4965_attribute_group = {
4125 .name = NULL, /* put in device directory */
4126 .attrs = iwl4965_sysfs_entries,
4127 };
4128
4129 static struct ieee80211_ops iwl4965_hw_ops = {
4130 .tx = iwl4965_mac_tx,
4131 .start = iwl4965_mac_start,
4132 .stop = iwl4965_mac_stop,
4133 .add_interface = iwl4965_mac_add_interface,
4134 .remove_interface = iwl4965_mac_remove_interface,
4135 .config = iwl4965_mac_config,
4136 .config_interface = iwl4965_mac_config_interface,
4137 .configure_filter = iwl4965_configure_filter,
4138 .set_key = iwl4965_mac_set_key,
4139 .update_tkip_key = iwl4965_mac_update_tkip_key,
4140 .get_stats = iwl4965_mac_get_stats,
4141 .get_tx_stats = iwl4965_mac_get_tx_stats,
4142 .conf_tx = iwl4965_mac_conf_tx,
4143 .reset_tsf = iwl4965_mac_reset_tsf,
4144 .bss_info_changed = iwl4965_bss_info_changed,
4145 .ampdu_action = iwl4965_mac_ampdu_action,
4146 .hw_scan = iwl_mac_hw_scan
4147 };
4148
4149 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4150 {
4151 int err = 0;
4152 struct iwl_priv *priv;
4153 struct ieee80211_hw *hw;
4154 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4155 unsigned long flags;
4156
4157 /************************
4158 * 1. Allocating HW data
4159 ************************/
4160
4161 /* Disabling hardware scan means that mac80211 will perform scans
4162 * "the hard way", rather than using device's scan. */
4163 if (cfg->mod_params->disable_hw_scan) {
4164 if (cfg->mod_params->debug & IWL_DL_INFO)
4165 dev_printk(KERN_DEBUG, &(pdev->dev),
4166 "Disabling hw_scan\n");
4167 iwl4965_hw_ops.hw_scan = NULL;
4168 }
4169
4170 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4171 if (!hw) {
4172 err = -ENOMEM;
4173 goto out;
4174 }
4175 priv = hw->priv;
4176 /* At this point both hw and priv are allocated. */
4177
4178 SET_IEEE80211_DEV(hw, &pdev->dev);
4179
4180 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4181 priv->cfg = cfg;
4182 priv->pci_dev = pdev;
4183
4184 #ifdef CONFIG_IWLWIFI_DEBUG
4185 priv->debug_level = priv->cfg->mod_params->debug;
4186 atomic_set(&priv->restrict_refcnt, 0);
4187 #endif
4188
4189 /**************************
4190 * 2. Initializing PCI bus
4191 **************************/
4192 if (pci_enable_device(pdev)) {
4193 err = -ENODEV;
4194 goto out_ieee80211_free_hw;
4195 }
4196
4197 pci_set_master(pdev);
4198
4199 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4200 if (!err)
4201 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4202 if (err) {
4203 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4204 if (!err)
4205 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4206 /* both attempts failed: */
4207 if (err) {
4208 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4209 DRV_NAME);
4210 goto out_pci_disable_device;
4211 }
4212 }
4213
4214 err = pci_request_regions(pdev, DRV_NAME);
4215 if (err)
4216 goto out_pci_disable_device;
4217
4218 pci_set_drvdata(pdev, priv);
4219
4220
4221 /***********************
4222 * 3. Read REV register
4223 ***********************/
4224 priv->hw_base = pci_iomap(pdev, 0, 0);
4225 if (!priv->hw_base) {
4226 err = -ENODEV;
4227 goto out_pci_release_regions;
4228 }
4229
4230 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4231 (unsigned long long) pci_resource_len(pdev, 0));
4232 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4233
4234 iwl_hw_detect(priv);
4235 printk(KERN_INFO DRV_NAME
4236 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4237 priv->cfg->name, priv->hw_rev);
4238
4239 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4240 * PCI Tx retries from interfering with C3 CPU state */
4241 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4242
4243 /* amp init */
4244 err = priv->cfg->ops->lib->apm_ops.init(priv);
4245 if (err < 0) {
4246 IWL_DEBUG_INFO("Failed to init APMG\n");
4247 goto out_iounmap;
4248 }
4249 /*****************
4250 * 4. Read EEPROM
4251 *****************/
4252 /* Read the EEPROM */
4253 err = iwl_eeprom_init(priv);
4254 if (err) {
4255 IWL_ERROR("Unable to init EEPROM\n");
4256 goto out_iounmap;
4257 }
4258 err = iwl_eeprom_check_version(priv);
4259 if (err)
4260 goto out_iounmap;
4261
4262 /* extract MAC Address */
4263 iwl_eeprom_get_mac(priv, priv->mac_addr);
4264 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
4265 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4266
4267 /************************
4268 * 5. Setup HW constants
4269 ************************/
4270 if (iwl_set_hw_params(priv)) {
4271 IWL_ERROR("failed to set hw parameters\n");
4272 goto out_free_eeprom;
4273 }
4274
4275 /*******************
4276 * 6. Setup priv
4277 *******************/
4278
4279 err = iwl_init_drv(priv);
4280 if (err)
4281 goto out_free_eeprom;
4282 /* At this point both hw and priv are initialized. */
4283
4284 /**********************************
4285 * 7. Initialize module parameters
4286 **********************************/
4287
4288 /* Disable radio (SW RF KILL) via parameter when loading driver */
4289 if (priv->cfg->mod_params->disable) {
4290 set_bit(STATUS_RF_KILL_SW, &priv->status);
4291 IWL_DEBUG_INFO("Radio disabled.\n");
4292 }
4293
4294 /********************
4295 * 8. Setup services
4296 ********************/
4297 spin_lock_irqsave(&priv->lock, flags);
4298 iwl4965_disable_interrupts(priv);
4299 spin_unlock_irqrestore(&priv->lock, flags);
4300
4301 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4302 if (err) {
4303 IWL_ERROR("failed to create sysfs device attributes\n");
4304 goto out_uninit_drv;
4305 }
4306
4307
4308 iwl_setup_deferred_work(priv);
4309 iwl_setup_rx_handlers(priv);
4310
4311 /********************
4312 * 9. Conclude
4313 ********************/
4314 pci_save_state(pdev);
4315 pci_disable_device(pdev);
4316
4317 /**********************************
4318 * 10. Setup and register mac80211
4319 **********************************/
4320
4321 err = iwl_setup_mac(priv);
4322 if (err)
4323 goto out_remove_sysfs;
4324
4325 err = iwl_dbgfs_register(priv, DRV_NAME);
4326 if (err)
4327 IWL_ERROR("failed to create debugfs files\n");
4328
4329 err = iwl_rfkill_init(priv);
4330 if (err)
4331 IWL_ERROR("Unable to initialize RFKILL system. "
4332 "Ignoring error: %d\n", err);
4333 iwl_power_initialize(priv);
4334 return 0;
4335
4336 out_remove_sysfs:
4337 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4338 out_uninit_drv:
4339 iwl_uninit_drv(priv);
4340 out_free_eeprom:
4341 iwl_eeprom_free(priv);
4342 out_iounmap:
4343 pci_iounmap(pdev, priv->hw_base);
4344 out_pci_release_regions:
4345 pci_release_regions(pdev);
4346 pci_set_drvdata(pdev, NULL);
4347 out_pci_disable_device:
4348 pci_disable_device(pdev);
4349 out_ieee80211_free_hw:
4350 ieee80211_free_hw(priv->hw);
4351 out:
4352 return err;
4353 }
4354
4355 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4356 {
4357 struct iwl_priv *priv = pci_get_drvdata(pdev);
4358 unsigned long flags;
4359
4360 if (!priv)
4361 return;
4362
4363 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4364
4365 iwl_dbgfs_unregister(priv);
4366 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4367
4368 /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4369 * to be called and iwl4965_down since we are removing the device
4370 * we need to set STATUS_EXIT_PENDING bit.
4371 */
4372 set_bit(STATUS_EXIT_PENDING, &priv->status);
4373 if (priv->mac80211_registered) {
4374 ieee80211_unregister_hw(priv->hw);
4375 priv->mac80211_registered = 0;
4376 } else {
4377 iwl4965_down(priv);
4378 }
4379
4380 /* make sure we flush any pending irq or
4381 * tasklet for the driver
4382 */
4383 spin_lock_irqsave(&priv->lock, flags);
4384 iwl4965_disable_interrupts(priv);
4385 spin_unlock_irqrestore(&priv->lock, flags);
4386
4387 iwl_synchronize_irq(priv);
4388
4389 iwl_rfkill_unregister(priv);
4390 iwl4965_dealloc_ucode_pci(priv);
4391
4392 if (priv->rxq.bd)
4393 iwl_rx_queue_free(priv, &priv->rxq);
4394 iwl_hw_txq_ctx_free(priv);
4395
4396 iwl_clear_stations_table(priv);
4397 iwl_eeprom_free(priv);
4398
4399
4400 /*netif_stop_queue(dev); */
4401 flush_workqueue(priv->workqueue);
4402
4403 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4404 * priv->workqueue... so we can't take down the workqueue
4405 * until now... */
4406 destroy_workqueue(priv->workqueue);
4407 priv->workqueue = NULL;
4408
4409 pci_iounmap(pdev, priv->hw_base);
4410 pci_release_regions(pdev);
4411 pci_disable_device(pdev);
4412 pci_set_drvdata(pdev, NULL);
4413
4414 iwl_uninit_drv(priv);
4415
4416 if (priv->ibss_beacon)
4417 dev_kfree_skb(priv->ibss_beacon);
4418
4419 ieee80211_free_hw(priv->hw);
4420 }
4421
4422 #ifdef CONFIG_PM
4423
4424 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4425 {
4426 struct iwl_priv *priv = pci_get_drvdata(pdev);
4427
4428 if (priv->is_open) {
4429 set_bit(STATUS_IN_SUSPEND, &priv->status);
4430 iwl4965_mac_stop(priv->hw);
4431 priv->is_open = 1;
4432 }
4433
4434 pci_set_power_state(pdev, PCI_D3hot);
4435
4436 return 0;
4437 }
4438
4439 static int iwl4965_pci_resume(struct pci_dev *pdev)
4440 {
4441 struct iwl_priv *priv = pci_get_drvdata(pdev);
4442
4443 pci_set_power_state(pdev, PCI_D0);
4444
4445 if (priv->is_open)
4446 iwl4965_mac_start(priv->hw);
4447
4448 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4449 return 0;
4450 }
4451
4452 #endif /* CONFIG_PM */
4453
4454 /*****************************************************************************
4455 *
4456 * driver and module entry point
4457 *
4458 *****************************************************************************/
4459
4460 /* Hardware specific file defines the PCI IDs table for that hardware module */
4461 static struct pci_device_id iwl_hw_card_ids[] = {
4462 #ifdef CONFIG_IWL4965
4463 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4464 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4465 #endif /* CONFIG_IWL4965 */
4466 #ifdef CONFIG_IWL5000
4467 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4468 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4469 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4470 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4471 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4472 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4473 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4474 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4475 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4476 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4477 /* 5350 WiFi/WiMax */
4478 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4479 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4480 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4481 #endif /* CONFIG_IWL5000 */
4482 {0}
4483 };
4484 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4485
4486 static struct pci_driver iwl_driver = {
4487 .name = DRV_NAME,
4488 .id_table = iwl_hw_card_ids,
4489 .probe = iwl4965_pci_probe,
4490 .remove = __devexit_p(iwl4965_pci_remove),
4491 #ifdef CONFIG_PM
4492 .suspend = iwl4965_pci_suspend,
4493 .resume = iwl4965_pci_resume,
4494 #endif
4495 };
4496
4497 static int __init iwl4965_init(void)
4498 {
4499
4500 int ret;
4501 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4502 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4503
4504 ret = iwlagn_rate_control_register();
4505 if (ret) {
4506 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4507 return ret;
4508 }
4509
4510 ret = pci_register_driver(&iwl_driver);
4511 if (ret) {
4512 IWL_ERROR("Unable to initialize PCI module\n");
4513 goto error_register;
4514 }
4515
4516 return ret;
4517
4518 error_register:
4519 iwlagn_rate_control_unregister();
4520 return ret;
4521 }
4522
4523 static void __exit iwl4965_exit(void)
4524 {
4525 pci_unregister_driver(&iwl_driver);
4526 iwlagn_rate_control_unregister();
4527 }
4528
4529 module_exit(iwl4965_exit);
4530 module_init(iwl4965_init);
Linux kernel - Deliverables
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